Latein Se - Sy
| Searsia pentaphylla | Sumach Fünfblättriger | Five- leaved Sumac | Anacardiaceae |
| Searsia tripartita | Sumach Dreiteiliger | Three- lobed Sumac | Anacardiaceae |
| Sechium edule | Chayote Essbare | Edible Chayote | Cucurbitaceae |
| Securigera carinata | Beilwicke Gekielte | Keeled Crown Vetch | Fabaceae |
| Securigera cretica | Beilwicke Kretische | Cretan Crown Vetch | Fabaceae |
| Securigera elegans | Beilwicke Elegante | Broad- leaved Crown Vetch | Fabaceae |
| Securigera globosa | Beilwicke Kugel | White Crown Vetch | Fabaceae |
| Securigera parviflora | Beilwicke Kleinblütige | Small- flowered Crown Vetch | Fabaceae |
| Securigera securidaca | Beilwicke Ziegen | Goat Crown Vetch | Fabaceae |
| Securigera varia | Beilwicke Bunte | Purple Crown Vetch | Fabaceae |
| Sedobassia sedoides | Radmelde Fetthennenähnliche | Sedum- like Smotherweed | Chenopodiaceae |
| Sedum acre | Fetthenne Scharfe | Goldmoss Stonecrop | Crassulaceae |
| Sedum aetnense | Fetthenne Ätna | Etna Stonecrop | Crassulaceae |
| Sedum album | Fetthenne Weiße | White Stonecrop | Crassulaceae |
| Sedum alpestre | Fetthenne Alpen | Pale Stonecrop | Crassulaceae |
| Sedum alsinefolium | Fetthenne Mierenblättrige | Spatulate- leaved Stonecrop | Crassulaceae |
| Sedum amplexicaule | Fetthenne Stängelumfassende | Clasping Stonecrop | Crassulaceae |
| Sedum andegavense | Fetthenne Angers | Angers Stonecrop | Crassulaceae |
| Sedum anglicum | Fetthenne Englische | English Stonecrop | Crassulaceae |
| Sedum annuum | Fetthenne Einjährige | Annual Stonecrop | Crassulaceae |
| Sedum aquilanum | Fetthenne L'Aquila | L'Aquila Stonecrop | Crassulaceae |
| Sedum arenarium | Fetthenne Sand | Sand Stonecrop | Crassulaceae |
| Sedum atratum ssp. atratum | Fetthenne Schwärzliche | Dark Stonecrop | Crassulaceae |
| Sedum atratum ssp. carinthiacum | Fetthenne Schwärzliche | Dark Stonecrop | Crassulaceae |
| Sedum brevifolium | Fetthenne Kurzblättrige | Short- leaved Stonecrop | Crassulaceae |
| Sedum caerulaeum | Fetthenne Blaue | Azure Stonecrop | Crassulaceae |
| Sedum caespitosum | Fetthenne Rasen | Broad Leaf Stonecrop | Crassulaceae |
| Sedum candollei | Fetthenne Pyrenäen | Pyrenean Stonecrop | Crassulaceae |
| Sedum cepaea | Fetthenne Thyrsen | Pink Stonecrop | Crassulaceae |
| Sedum confertiflorum | Fetthenne Dichtblütige | Dense- flowered Stonecrop | Crassulaceae |
| Sedum creticum | Fetthenne Kretische | Cretan Stonecrop | Crassulaceae |
| Sedum dasyphyllum | Fetthenne Dickblättrige | Thick- Leaf Stonecrop | Crassulaceae |
| Sedum eriocarpum | Fetthenne Wollfrüchtige | Wool- fruited Stonecrop | Crassulaceae |
| Sedum forsterianum | Fetthenne Zierliche | Rock Stonecrop | Crassulaceae |
| Sedum fragrans | Fetthenne Wohlriechende | Odorant Stonecrop | Crassulaceae |
| Sedum grisebachii | Fetthenne Grisebachs | Grisebach's Stonecrop | Crassulaceae |
| Sedum gypsicola | Fetthenne Gips | Gypsum Stonecrop | Crassulaceae |
| Sedum hirsutum | Fetthenne Behaarte | Hairy Stonecrop | Crassulaceae |
| Sedum hispanicum | Fetthenne Spanische | Spanish Stonecrop | Crassulaceae |
| Sedum laconicum | Fetthenne Lakonische | Laconian Stonecrop | Crassulaceae |
| Sedum lagascae | Fetthenne Lagascas | Lagasca's Stonecrop | Crassulaceae |
| Sedum litoreum | Fetthenne Strand | Coastal Stonecrop | Crassulaceae |
| Sedum magellense | Fetthenne Majella | Majella Stonecrop | Crassulaceae |
| Sedum maireanum | Fetthenne Maires | Maire's Stonecrop | Crassulaceae |
| Sedum melanantherum | Fetthenne Schwarzmännige | Black Anther Stonecrop | Crassulaceae |
| Sedum mexicanum | Fetthenne Mexikanische | Mexican Stonecrop | Crassulaceae |
| Sedum monregalense | Fetthenne Quirlblättrige | Whorled- leaved Stonecrop | Crassulaceae |
| Sedum montanum | Fetthenne Berg | Mountain Stonecrop | Crassulaceae |
| Sedum mucizonia | Fetthenne Steifhaarige | Hispid Stonecrop | Crassulaceae |
| Sedum nevadense | Fetthenne Rasen | Broad Leaf Stonecrop | Crassulaceae |
| Sedum ochroleucum | Fetthenne Blassgelbe | European Stonecrop | Crassulaceae |
| Sedum pallidum | Fetthenne Bleiche | Pale Stonecrop | Crassulaceae |
| Sedum palmeri | Fetthenne Palmers | Palmer's Stonecrop | Crassulaceae |
| Sedum pedicellatum | Fetthenne Gestielte | Pedicellate Stonecrop | Crassulaceae |
| Sedum praealtum | Fetthenne Hohe | Greater Mexican Stonecrop | Crassulaceae |
| Sedum pruinatum | Fetthenne Bereifte | Pruinose Stonecrop | Crassulaceae |
| Sedum rubens | Fetthenne Rötliche | Red Stonecrop | Crassulaceae |
| Sedum rupestre | Fetthenne Felsen | Jenny's Stonecrop | Crassulaceae |
| Sedum samium | Fetthenne Samos | Samos Stonecrop | Crassulaceae |
| Sedum sarmentosum | Fetthenne Ausläufer | Stringy Stonecrop | Crassulaceae |
| Sedum sediforme | Fetthenne Nizza | Pale Stonecrop | Crassulaceae |
| Sedum sexangulare | Fetthenne Milde | Tasteless Stonecrop | Crassulaceae |
| Sedum stefco | Fetthenne Stefco | Stefco Stonecrop | Crassulaceae |
| Sedum tristriatum | Fetthenne Dreistreifige | Threestriped Stonecrop | Crassulaceae |
| Sedum tuberiferum | Fetthenne Knollige | Tuber- bearing Stonecrop | Crassulaceae |
| Sedum tymphaeum | Fetthenne Tymphi | Tymphi Stonecrop | Crassulaceae |
| Sedum urvillei | Fetthenne Ungarische | Hungarian Stonecrop | Crassulaceae |
| Sedum villosum | Fetthenne Sumpf | Hairy Stonecrop | Crassulaceae |
| Selaginella denticulata | Moosfarn Gezähnter | Tooth- leaved Spikemoss | Selaginellaceae |
| Selaginella helvetica | Moosfarn Schweizer | Swiss Spikemoss | Selaginellaceae |
| Selaginella kraussiana | Moosfarn Feingliedriger | Krauss's Spikemoss | Selaginellaceae |
| Selaginella selaginoides | Moosfarn Dorniger | Club Spikemoss | Selaginellaceae |
| Selinopsis foetida | Kümmel Stinkender | Stinking Caraway | Apiaceae |
| Selinum broteri | Silge Broteros | Brotero's Milk- Parsley | Apiaceae |
| Selinum carvifolia | Silge Kümmelblättrige | Cambridge Milk- Parsley | Apiaceae |
| Sempervivum arachnoideum | Hauswurz Spinnweb | Cobweb Houseleek | Crassulaceae |
| Sempervivum calcareum | Hauswurz Kalk | Limestone Houseleek | Crassulaceae |
| Sempervivum cantabricum | Hauswurz Kantabrische | Cantabrian Houseleek | Crassulaceae |
| Sempervivum dolomiticum | Hauswurz Dolomiten | Dolomitic Houseleek | Crassulaceae |
| Sempervivum grandiflorum | Hauswurz Großblütige | Gaudin's Houseleek | Crassulaceae |
| Sempervivum ciliosum | Hauswurz Bewimperte | Ciliate Houseleek | Crassulaceae |
| Sempervivum kosaninii | Hauswurz Kosanins | Kosanin's Houseleek | Crassulaceae |
| Sempervivum leucanthum | Hauswurz Weißblütige | White flowered Houseleek | Crassulaceae |
| Sempervivum marmoreum | Hauswurz Marmorierte | Marbled Houseleek | Crassulaceae |
| Sempervivum minutum | Hauswurz Sierra Nevada | Sierra Nevada Houseleek | Crassulaceae |
| Sempervivum montanum | Hauswurz Berg | Mountain Houseleek | Crassulaceae |
| Sempervivum octopodes | Hauswurz Achtstängelige | Eight- stalk Houseleek | Crassulaceae |
| Sempervivum pittonii | Hauswurz Serpentin | Pittoni's Houseleek | Crassulaceae |
| Sempervivum tectorum | Hauswurz Dach | Common Houseleek | Crassulaceae |
| Sempervivum wulfenii | Hauswurz Wulfens | Wulfen's Houseleek | Crassulaceae |
| Sempervivum wulfenii ssp juvanii | Hauswurz Juvans | Juvan's Houseleek | Crassulaceae |
| Sempervivum zeleborii | Hauswurz Zelebors | Zelebor's Houseleek | Crassulaceae |
| Sempervivum x barbulatum | Hauswurz Bärtige | Bearded Houseleek | Crassulaceae |
| Senecio aethnensis | Greiskraut Ätna | Etna Ragwort | Asteraceae |
| Senecio altissimus | Greiskraut Hohes | Tall Ragwort | Asteraceae |
| Senecio angulatus | Greiskraut Kantiges | Creeping Ragwort | Asteraceae |
| Senecio balansae | Greiskraut Balansas | Balansa's Ragwort | Asteraceae |
| Senecio bayonnensis | Greiskraut Bayonne | Bayonne Ragwort | Asteraceae |
| Senecio cacaliaster | Greiskraut Dost | Croatian Ragwort | Asteraceae |
| Senecio carpetanus | Greiskraut Carpetana | Carpetana Ragwort | Asteraceae |
| Senecio chrysanthemifolius | Greiskraut Wucherblumenblättriges | Chrysanthemum- leaved Ragwort | Asteraceae |
| Senecio crassifolius | Greiskraut Dickblättriges | Thick- leaved Ragwort | Asteraceae |
| Senecio deltoideus | Greiskraut Dreiecksblättriges | Triangle- leaved Ragwort | Asteraceae |
| Senecio doria | Greiskraut Gold | Golden Ragwort | Asteraceae |
| Senecio doronicum | Greiskraut Gemswurz | Chamois Ragwort | Asteraceae |
| Senecio duriaei | Greiskraut Durieus | Durieu's Ragwort | Asteraceae |
| Senecio elegans | Greiskraut Rosa | Purple Ragwort | Asteraceae |
| Senecio eriopus | Greiskraut Wollfüßiges | Wooly Ragwort | Asteraceae |
| Senecio eubaeus | Greiskraut Euböa | Evian Ragwort | Asteraceae |
| Senecio flavus | Greiskraut Gelbes | Yellow Ragwort | Asteraceae |
| Senecio fontanicola | Greiskraut Quell | Fountain Ragwort | Asteraceae |
| Senecio fruticulosus | Greiskraut Strauchiges | Shrubby Ragwort | Asteraceae |
| Senecio gallicus | Greiskraut Französisches | French Ragwort | Asteraceae |
| Senecio glaucus ssp. coronopifolius | Greiskraut Krähenfußblättriges | French Ragwort | Asteraceae |
| Senecio nemorensis | Greiskraut Hain | Grove Ragwort | Asteraceae |
| Senecio hercynicus | Greiskraut Harzer | Harz Ragwort | Asteraceae |
| Senecio inaequidens | Greiskraut Schmalblättriges | Narrow- leaved Ragwort | Asteraceae |
| Senecio lagascanus | Greiskraut Lagascas | Lagasca's Ragwort | Asteraceae |
| Senecio legionensis | Greiskraut Leonesisches | Leon Ragwort | Asteraceae |
| Senecio leucanthemifolius | Greiskraut Kamillenblättriges | Chamomile- leaved Ragwort | Asteraceae |
| Senecio lividus | Greiskraut Bleigraues | Leaden Ragwort | Asteraceae |
| Senecio lopezii | Greiskraut Lopez' | Lopez's Ragwort | Asteraceae |
| Senecio lusitanicus | Greiskraut Portugiesisches | Portuguese Ragwort | Asteraceae |
| Senecio macedonicus | Greiskraut Mazedonisches | Macedonian Ragwort | Asteraceae |
| Senecio malacitanus | Greiskraut Malaga | Malaga Ragwort | Asteraceae |
| Senecio morisii | Greiskraut Moris' | Moris's Ragwort | Asteraceae |
| Senecio nevadensis | Greiskraut Sierra Nevada | Sierra Nevada Ragwort | Asteraceae |
| Senecio ovatus | Greiskraut Fuchssches | Wood Ragwort | Asteraceae |
| Senecio petraeus | Greiskraut Felsen | Rock Ragwort | Asteraceae |
| Senecio provincialis | Greiskraut Provence | Gerard's Ragwort | Asteraceae |
| Senecio pterophorus | Greiskraut Südafrikanisches | Common Ragwort | Asteraceae |
| Senecio pyrenaicus | Greiskraut Pyrenäen | Pyrenean Ragwort | Asteraceae |
| Senecio quinqueradiatus | Greiskraut Fünfstrahliges | Fivestar Ragwort | Asteraceae |
| Senecio rosinae | Greiskraut Rosines | Rosine's Ragwort | Asteraceae |
| Senecio rupestris | Greiskraut Felsen | Rock Ragwort | Asteraceae |
| Senecio ruthenenis | Greiskraut Rodez | Rodez Ragwort | Asteraceae |
| Senecio sardous | Greiskraut Sardisches | Sardinian Ragwort | Asteraceae |
| Senecio sarracenicus | Greiskraut Fluss | Broad- leaved Ragwort | Asteraceae |
| Senecio scopolii | Greiskraut Scopolis | Scopoli's Ragwort | Asteraceae |
| Senecio serpenticola | Greiskraut Serpentin | Serpentine Ragwort | Asteraceae |
| Senecio squalidus | Greiskraut Oxford | Oxford Ragwort | Asteraceae |
| Senecio sylvaticus | Greiskraut Wald | Heath Ragwort | Asteraceae |
| Senecio tamoides | Greiskraut Kletter | Tamus- like Ragwort | Asteraceae |
| Senecio thapsoides | Greiskraut Königskerzen | Verbascum- like Ragwort | Asteraceae |
| Senecio transiens | Greiskraut Wechselndes | Changing Ragwort | Asteraceae |
| Senecio umbrosus | Greiskraut Schatten | Shadow Ragwort | Asteraceae |
| Senecio varicosus | Greiskraut Balearen | Balearic Ragwort | Asteraceae |
| Senecio vernalis | Greiskraut Frühlings | Spring Ragwort | Asteraceae |
| Senecio viscosus | Greiskraut Klebriges | Sticky Ragwort | Asteraceae |
| Senecio vulgaris | Greiskraut Gewöhnliches | Common Ragwort | Asteraceae |
| Senecio x decipiens | Greiskraut Täuschendes | Deceptive Ragwort | Asteraceae |
| Sequoia sempervirens | Mammutbaum Küsten | Coastal Redwood | Cupressaceae |
| Sequoiadendron giganteum | Mammutbaum Riesen | Giant Redwood | Cupressaceae |
| Serapias bergonii | Zungenständel Schlankwüchsiger | Bergon's Tongue Orchid | Orchidaceae |
| Serapias cordigera | Zungenständel Herzförmiger | Heart- flowered Tongue Orchid | Orchidaceae |
| Serapias lingua | Zungenständel Echter | Common Tongue Orchid | Orchidaceae |
| Serapias neglecta | Zungenstendel Übersehener | Scarce Tongue Orchid | Orchidaceae |
| Serapias nurrica | Zungenständel Nurra | Nurra Tongue Orchid | Orchidaceae |
| Serapias olbia | Zungenständel Südfranzösischer | Cote- Azur Tongue Orchid | Orchidaceae |
| Serapias orientalis | Zungenständel Orientalischer | Eastern Tongue Orchid | Orchidaceae |
| Serapias parviflora | Zungenständel Kleinblütiger | Small- flowered Orchid | Orchidaceae |
| Serapias perez- chiscanoi | Zungenständel Grüner | Green Tongue Orchid | Orchidaceae |
| Serapias strictiflora | Zungenständel Steifblütiger | Stiff- flowered Tongue Orchid | Orchidaceae |
| Serapias vomeracea | Zungenständel Pflugschar | Long- lipped Tongue Orchid | Orchidaceae |
| Serratula tinctoria | Scharte Färber | Dyer's Plumeless Saw Wort | Asteraceae |
| Sesamoides interrupta | Sternfrucht Unterbrochene | Interrupted Mignonette | Resedaceae |
| Sesamoides minor | Sternfrucht Kleine | Small Mignonette | Resedaceae |
| Sesamoides prostrata | Sternfrucht Niederliegende | Prostrate Mignonette | Resedaceae |
| Sesamoides purpurascens | Sternfrucht Purpur | Purple Mignonette | Resedaceae |
| Sesamoides spathulifolia | Sternfrucht Spatelförmige | Spatulate Mignonette | Resedaceae |
| Sesamoides suffruticosa | Sternfrucht Halbstrauchige | Shrubby Mignonette | Resedaceae |
| Seseli annuum ssp. annuum | Sesel Gewöhnlicher Steppen | Common Annual Seseli | Apiaceae |
| Seseli annuum ssp. carvifolium | Sesel Kümmelblättriger Steppen | Caraway- leaved Annual Seseli | Apiaceae |
| Seseli arenarium | Heilwurz Sand | Sand Seseli | Apiaceae |
| Seseli aroanicum | Sesel Mt. Chelmos | Mt. Chelmos Seseli | Apiaceae |
| Seseli austriacum | Sesel Österreichischer | Austrian Seseli | Apiaceae |
| Seseli bocconei | Sesel Boccones | Boccone's Seseli | Apiaceae |
| Seseli bulgaricum | Sesel Bulgarischer | Bulgarian Seseli | Apiaceae |
| Seseli cantabricum | Sesel Kantabrischer | Cantabrian Seseli | Apiaceae |
| Seseli crithmifolium | Sesel Meerfenchelblättriger | Aegean Rubber Fennel | Apiaceae |
| Seseli djianeae | Sesel Djianes | Djiane's Seseli | Apiaceae |
| Seseli farrenyi | Sesel Farrenys | Farreany's Seseli | Apiaceae |
| Seseli galloprovinciale | Sesel Provencialischer | Provence Seseli | Apiaceae |
| Seseli globiferum | Sesel Kugelköpfiger | Globose Seseli | Apiaceae |
| Seseli gouanii | Sesel Gouans | Gouan's Seseli | Apiaceae |
| Seseli gracile | Sesel Zierlicher | Slender Seseli | Apiaceae |
| Seseli gummiferum | Sesel Gummi | Common Rubber Fennel | Apiaceae |
| Seseli halkensis | Sesel Chalki | Chalki Seseli | Apiaceae |
| Seseli hippomarathrum | Sesel Pferde | Horse Fennel | Apiaceae |
| Seseli intricatum | Sesel Verwickelter | Entangled Seseli | Apiaceae |
| Seseli libanotis | Heilwurz Berg | Mooncarrot | Apiaceae |
| Seseli longifolium | Sesel Langblättriger | Long- leaved Seseli | Apiaceae |
| Seseli malyi | Sesel Malys | Maly's Seseli | Apiaceae |
| Seseli montanum | Sesel Berg | Mountain Seseli | Apiaceae |
| Seseli montanum ssp. tommasinii | Sesel Bulgarischer | Bulgarian Seseli | Apiaceae |
| Seseli osseum | Sesel Meergrüner | Bony Seseli | Apiaceae |
| Seseli pallasii | Sesel Pallas' | Pallas's Seseli | Apiaceae |
| Seseli parnassicum | Sesel Mt. Parnassos | Mt. Parnassos Seseli | Apiaceae |
| Seseli peucedanoides | Sesel Haarstrangähnlicher | Pursley- like Seseli | Apiaceae |
| Seseli polyphyllum | Sesel Vielblättriger | Many- leaved Seseli | Apiaceae |
| Seseli praecox | Sesel Früher | Early Seseli | Apiaceae |
| Seseli rhodopeum | Sesel Rhodopen | Rhodope Seseli | Apiaceae |
| Seseli rigidum | Sesel Steifer | Rigid Seseli | Apiaceae |
| Seseli tortuosum | Heilwurz Gedrehte | Massilian Seseli | Apiaceae |
| Seseli vandasii | Sesel Vandas | Vandas's Seseli | Apiaceae |
| Sesuvium portulacastrum | Meerportulak Gewöhnlicher | Shoreline Purslane | Aizoaceae |
| Setaria faberi | Borstenhirse Fabers | Faber's Bristle Grass | Poaceae |
| Setaria italica | Borstenhirse Italienische | Foxtail Millet | Poaceae |
| Setaria pumila | Borstenhirse Fuchsrote | Yellow Bristle Grass | Poaceae |
| Setaria verticillata | Borstenhirse Quirl | Hooked Bristle Grass | Poaceae |
| Setaria viridis | Borstenhirse Grüne | Green Bristle Grass | Poaceae |
| Sherardia arvensis | Ackerröte | Field Madder | Rubiaceae |
| Sibbaldia parviflora | Gelbling Kleinblütiger | Small- flowered Sibbaldia | Rosaceae |
| Sibbaldia procumbens | Gelbling Alpen | Creeping Sibbaldia | Rosaceae |
| Sibiraea altaiensis | Blauspiere Sibirische | Smooth Sibiraea | Rosaceae |
| Sibthorpia africana | Geldwurz Balearen | Balearic Moneywort | Plantaginaceae |
| Sibthorpia europaea | Geldwurz Europäische | European Moneywort | Plantaginaceae |
| Sibthorpia peregrina | Geldwurz Fremde | Foreign Moneywort | Plantaginaceae |
| Siculosciadium nebrodense | Haarstrang Nebrodi | Nebrodi Parsley | Apiaceae |
| Sicyos angulatus | Haargurke Kantige | Bur Cucumber | Cucurbitaceae |
| Sida rhombifolia | Sida Rhombenblättrige | Cuban Jute | Malvaceae |
| Sida spinosa | Sida Stachlige | Prickly Fanpetals | Malvaceae |
| Sideritis albiflora | Gliedkraut Weißblütiges | White- flowered Ironwort | Lamiaceae |
| Sideritis arborescens | Gliedkraut Strauch | Shrubby Ironwort | Lamiaceae |
| Sideritis bourgaeana | Gliedkraut Bourgeaus | Bourgeau's Ironwort | Lamiaceae |
| Sideritis bubanii | Gliedkraut Bubanis | Bubani's Ironwort | Lamiaceae |
| Sideritis clandestina | Gliedkraut Verstecktes | Hidden Ironwort | Lamiaceae |
| Sideritis carbonellii | Gliedkraut Carbonells | Carbonell's Ironwort | Lamiaceae |
| Sideritis chamaedryfolia | Gliedkraut Gamanderblättriges | Germander- leaved Ironwort | Lamiaceae |
| Sideritis curvidens | Gliedkraut Gekrümmtzähniges | Curved- toothed Ironwort | Lamiaceae |
| Sideritis dianica | Gliedkraut Alicante | Alicante Ironwort | Lamiaceae |
| Sideritis endressii | Gliedkraut Endress' | Endress's Ironwort | Lamiaceae |
| Sideritis euboae | Gliedkraut Euböa | Evvia Ironwort | Lamiaceae |
| Sideritis fruticulosa | Gliedkraut Halbstrauchiges | Bushy Ironwort | Lamiaceae |
| Sideritis glacialis | Gliedkraut Gletscher | Glacier Ironwort | Lamiaceae |
| Sideritis glauca | Gliedkraut Blaugrünes | Glaucous Ironwort | Lamiaceae |
| Sideritis grandiflora | Gliedkraut Großblütiges | Large- flowered Ironwort | Lamiaceae |
| Sideritis hirsuta | Gliedkraut Borsten | Hirsute Ironwort | Lamiaceae |
| Sideritis hyssopifolia | Gliedkraut Ysopblättriges | Hyssop- leaved Ironwort | Lamiaceae |
| Sideritis ibanyezii | Gliedkraut Gelbgrünes | Yellow- green Ironwort | Lamiaceae |
| Sideritis incana | Gliedkraut Graues | Grey Ironwort | Lamiaceae |
| Sideritis ilicifolia | Gliedkraut Stechpalmenblättriges | Holly- leaved Ironwort | Lamiaceae |
| Sideritis italica | Gliedkraut Italienisches | Italian Ironwort | Lamiaceae |
| Sideritis lacaitae | Gliedkraut Lacaitas | Lacaita's Ironwort | Lamiaceae |
| Sideritis lanata | Gliedkraut Wolliges | Wooly Ironwort | Lamiaceae |
| Sideritis lasiantha | Gliedkraut Zottelblütiges | Shaggy- flowered Ironwort | Lamiaceae |
| Sideritis laxespicata | Gliedkraut Lockerähriges | Lax- spiked Ironwort | Lamiaceae |
| Sideritis leucantha | Gliedkraut Weißes | White Ironwort | Lamiaceae |
| Sideritis lurida | Gliedkraut Schmutziges | Dingy- Yellow Ironwort | Lamiaceae |
| Sideritis monserratiana | Gliedkraut Montserrats | Montserrat's Ironwort | Lamiaceae |
| Sideritis montana | Gliedkraut Berg | Mountain Ironwort | Lamiaceae |
| Sideritis murgetana | Gliedkraut Murcia | Murcia Ironwort | Lamiaceae |
| Sideritis osteoxylla | Gliedkraut Almeria | Almeria Ironwort | Lamiaceae |
| Sideritis ovata | Gliedkraut Eiblättriges | Ovate Ironwort | Lamiaceae |
| Sideritis paulii | Gliedkraut Pauls | Paul's Ironwort | Lamiaceae |
| Sideritis perfoliata | Gliedkraut Durchwachsenblättriges | Perfoliate Ironwort | Lamiaceae |
| Sideritis pungens | Gliedkraut Stechendes | Pungent Ironwort | Lamiaceae |
| Sideritis purpurea | Gliedkraut Purpur | Purple Ironwort | Lamiaceae |
| Sideritis pusilla | Gliedkraut Zwerg | Dwarf Ironwort | Lamiaceae |
| Sideritis raeseri | Gliedkraut Parnassisches | Parnassos Ironwort | Lamiaceae |
| Sideritis reverchonii | Gliedkraut Reverchons | Reverchon's Ironwort | Lamiaceae |
| Sideritis romana | Gliedkraut Römisches | Roman Ironwort | Lamiaceae |
| Sideritis scardica | Gliedkraut Balkan | Balkans Ironwort | Lamiaceae |
| Sideritis serrata | Gliedkraut Gesägtes | Serrate Ironwort | Lamiaceae |
| Sideritis sipylea | Gliedkraut Sipylos | Sipylos Ironwort | Lamiaceae |
| Sideritis spinulosa | Gliedkraut Dorniges | Spiny Ironwort | Lamiaceae |
| Sideritis stachyoides | Gliedkraut Ziestähnliches | Hedgenettle- like Ironwort | Lamiaceae |
| Sideritis syriaca | Gliedkraut Syrisches | Sage- leaved Ironwort | Lamiaceae |
| Sideritis tragoriganum | Gliedkraut Schmalblättriges | Narrow- leaved Ironwort | Lamiaceae |
| Sigesbeckia orientalis | Siegesbeckie Orientalische | Common St Paul's- Wort | Asteraceae |
| Sigesbeckia serrata | Siegesbeckie Herzblatt | Heart- leaved St Paul's- Wort | Asteraceae |
| Silene acaulis | Leimkraut Stängelloses | Moss Catchfly | Caryophyllaceae |
| Silene acutifolia | Leimkraut Spitzblättriges | Acutifoliate Catchfly | Caryophyllaceae |
| Silene adelphiae | Leimkraut Adelphos | Adelphos Catchfly | Caryophyllaceae |
| Silene aegaea | Leimkraut Ägäisches | Aegean Catchfly | Caryophyllaceae |
| Silene aellenii | Leimkraut Aellens | Aellen's Catchfly | Caryophyllaceae |
| Silene alexandrina | Leimkraut Alexandriner | Alexandrian Catchfly | Caryophyllaceae |
| Silene almolae | Leimkraut Almola | Almola Catchfly | Caryophyllaceae |
| Silene alpestris | Leimkraut Alpen | Big Alpine Catchfly | Caryophyllaceae |
| Silene ammophila | Leimkraut Sandliebendes | Sand Catchfly | Caryophyllaceae |
| Silene andryalifolia | Leimkraut Andryalablättrige | Andryala- leaved Catchfly | Caryophyllaceae |
| Silene antri- jovis | Leimkraut Jupiterhöhlen | Cave-of-Jupiter Catchfly | Caryophyllaceae |
| Silene apetala | Leimkraut Kronenloses | Bare Catchfly | Caryophyllaceae |
| Silene armeria | Leimkraut Nelken | Sweet William Catchfly | Caryophyllaceae |
| Pechnelke Stern | Star Catchfly | Caryophyllaceae | |
| Pechnelke Purpur | Purple Catchfly | Caryophyllaceae | |
| Silene auriculata | Leimkraut Geöhrtes | Auriculate Catchfly | Caryophyllaceae |
| Silene baccifera | Leimkraut Beeren | Berry Catchfly | Caryophyllaceae |
| Silene badaroi | Leimkraut Badaros | Badaro's Catchfly | Caryophyllaceae |
| Silene behen | Leimkraut Haarloses | Hairless Catchfly | Caryophyllaceae |
| Silene bellidifolia | Leimkraut Gänseblümchenblättriges | Daisy- leaved Catchfly | Caryophyllaceae |
| Silene borderei | Leimkraut Borderes | Bordere's Catchfly | Caryophyllaceae |
| Silene boryi | Leimkraut Borys | Bory's Catchfly | Caryophyllaceae |
| Silene bupleuroides | Leimkraut Hasenohr | Hare's Ear Catchfly | Caryophyllaceae |
| Silene cambessedesii | Leimkraut Cambessèdes' | Cambessèdes's Catchfly | Caryophyllaceae |
| Silene campanula | Leimkraut Glockiges | Campanulate Catchfly | Caryophyllaceae |
| Silene cattariniana | Leimkraut Cattarinis | Cattarini's Catchfly | Caryophyllaceae |
| Silene chalcedonica | Leimkraut Scharlach | Chalcedon Catchfly | Caryophyllaceae |
| Silene chlorantha | Leimkraut Grünliches | Yellowgreen Catchfly | Caryophyllaceae |
| Silene ciliata | Leimkraut Bewimpertes | Ciliate Catchfly | Caryophyllaceae |
| Silene cintrana | Leimkraut Sintra | Sintra Catchfly | Caryophyllaceae |
| Silene coeli- rosa | Rosa Himmelsröschen | Pink Rose of Heaven | Caryophyllaceae |
| Silene colorata | Leimkraut Farbiges | Mediterranean Catchfly | Caryophyllaceae |
| Silene compacta | Leimkraut Dichtes | Compact Catchfly | Caryophyllaceae |
| Silene congesta | Leimkraut Gedrängtes | Crowded Catchfly | Caryophyllaceae |
| Silene conglomeratica | Leimkraut Konglomerat | Conglomerate Catchfly | Caryophyllaceae |
| Silene coutinhoi | Leimkraut Coutinhos | Coutinho's Catchfly | Caryophyllaceae |
| Silene conica | Leimkraut Kegelfrüchtiges | Sand Catchfly | Caryophyllaceae |
| Silene conoidea | Leimkraut Kugel | Weed Catchfly | Caryophyllaceae |
| Silene cordifolia | Leimkraut Herzblättriges | Heart- leaved Catchfly | Caryophyllaceae |
| Silene corinthiaca | Leimkraut Korinth | Corinthian Catchfly | Caryophyllaceae |
| Silene coronaria | Lichtnelke Vexier | Rose Campion | Caryophyllaceae |
| Silene cretica | Leimkraut Kretisches | Cretan Catchfly | Caryophyllaceae |
| Silene cythnia | Leimkraut Cythnia | Cythnia Catchfly | Caryophyllaceae |
| Silene damboldtiana | Leimkraut Damboldts | Damboldt's Catchfly | Caryophyllaceae |
| Silene dichotoma | Leimkraut Gabeliges | Forked Catchfly | Caryophyllaceae |
| Silene diclinis | Lichtnelke Eingeschlechtliche | Unisexual Campion | Caryophyllaceae |
| Silene dioica | Lichtnelke Rote | Red Campion | Caryophyllaceae |
| Silene dirphya | Leimkraut Mt. Dirphys | Mt. Dirphys Catchfly | Caryophyllaceae |
| Silene discolor | Leimkraut Zweifarbiges | Discolored Catchfly | Caryophyllaceae |
| Silene disticha | Leimkraut Zweizeiliges | Distichous Catchfly | Caryophyllaceae |
| Silene diversifolia ssp. bergiana | Leimkraut Bergius' | Bergius's Catchfly | Caryophyllaceae |
| Silene diversifolia ssp. diversifolia | Leimkraut Verschiedenblättriges | Different- leaved Catchfly | Caryophyllaceae |
| Silene echinata | Leimkraut Igel | Hedgehog Catchfly | Caryophyllaceae |
| Silene echinosperma | Leimkraut Igelsamige | Bristleseed Catchfly | Caryophyllaceae |
| Silene elisabethae | Leimkraut Großblütiges | Large- flowered Catchfly | Caryophyllaceae |
| Silene euxina | Leimkraut Pontisches | Black Sea Catchfly | Caryophyllaceae |
| Silene fabaria | Leimkraut Bohnen | Bean- Catchfly | Caryophyllaceae |
| Silene fabarioides | Leimkraut Bohnenähnliches | Bean- like Catchfly | Caryophyllaceae |
| Silene fernandezii | Leimkraut Fernandez' | Fernandez's Catchfly | Caryophyllaceae |
| Silene flavescens | Leimkraut Gelbliches | Yellowish Catchfly | Caryophyllaceae |
| Silene flos- cuculi | Lichtnelke Kuckucks | Ragged Robin | Caryophyllaceae |
| Silene flos- jovis | Lichtnelke Jupiter | Flower of Jupiter | Caryophyllaceae |
| Silene foetida | Leimkraut Stinkendes | Stinking Catchfly | Caryophyllaceae |
| Silene fruticosa | Leimkraut Strauchiges | Woody Catchfly | Caryophyllaceae |
| Silene frivaldszkyana | Leimkraut Frivaldszkys | Frivaldszky's Catchfly | Caryophyllaceae |
| Silene fuscata | Leimkraut Braunrotes | Dark- brown Catchfly | Caryophyllaceae |
| Silene gaditana | Leimkraut Gaditana | Gaditana Catchfly | Caryophyllaceae |
| Silene gallica | Leimkraut Französisches | Small- flowered Catchfly | Caryophyllaceae |
| Silene gazulensis | Leimkraut Alcala de los Gazules | Alcala de los Gazules Catchfly | Caryophyllaceae |
| Silene germana | Leimkraut Germanas | Germana's Catchfly | Caryophyllaceae |
| Silene gigantea | Leimkraut Riesen | Giant Catchfly | Caryophyllaceae |
| Silene gracilis | Leimkraut Zierliches | Slender Catchfly | Caryophyllaceae |
| Silene graminea | Leimkraut Grasblättriges | Grass-like Catchfly | Caryophyllaceae |
| Silene grisebachii | Leimkraut Grisebachs | Grisebach's Catchfly | Caryophyllaceae |
| Silene hausknechtii | Leimkraut Haussknechts | Haussknecht's Catchfly | Caryophyllaceae |
| Silene hayekina | Leimkraut Hayeks | Hayek's Catchfly | Caryophyllaceae |
| Silene heuffelii | Lichtnelke Heuffels | Heuffel's Campion | Caryophyllaceae |
| Silene hicesiae | Leimkraut Panarea | Panarea Catchfly | Caryophyllaceae |
| Silene hifacensis | Leimkraut Penyal d'Ifac | Penyal d'Ifac Catchfly | Caryophyllaceae |
| Silene holzmannii | Leimkraut Holzmanns | Holzmann's Catchfly | Caryophyllaceae |
| Silene inaperta | Leimkraut Ungeöffnetes | Closed Catchfly | Caryophyllaceae |
| Silene integripetala | Leimkraut Ganzrandiges | Entire- patal Catchfly | Caryophyllaceae |
| Silene intonsum | Strahlensame Langhaariger | Long- haired Catchfly | Caryophyllaceae |
| Silene ionica | Leimkraut Ionische | Ionian Catchfly | Caryophyllaceae |
| Silene italica | Leimkraut Italienisches | White Sticky Catchfly | Caryophyllaceae |
| Silene laconica | Leimkraut Lakonisches | Laconian Catchfly | Caryophyllaceae |
| Silene laeta | Frohes Himmelsröschen | Pleasant Rose of Heaven | Caryophyllaceae |
| Silene lanuginosa | Leimkraut Wolliges | Lanate Catchfly | Caryophyllaceae |
| Silene latifolia | Lichtnelke Weiße | White Campion | Caryophyllaceae |
| Silene legionensis | Lichtnelke Leoneser | Leon Catchfly | Caryophyllaceae |
| Silene lerchenfeldianum | Leimkraut Lerchenfelds | Lerchenfeld's Catchfly | Caryophyllaceae |
| Silene linicola | Leimkraut Flachs | Flaxfield Catchfly | Caryophyllaceae |
| Silene littorea | Leimkraut Strand | Sea Catchfly | Caryophyllaceae |
| Silene longicilia | Leimkraut Langwimperiges | Long- ciliate Catchfly | Caryophyllaceae |
| Silene mariana | Leimkraut Sierra Morena | Sierra Morena Catchfly | Caryophyllaceae |
| Silene marizii | Lichtnelke Mariz' | Mariz's Campion | Caryophyllaceae |
| Silene mellifera | Leimkraut Honig | Honey Catchfly | Caryophyllaceae |
| Silene melzheimeri | Leimkraut Melzheimers | Melzheimer's Catchfly | Caryophyllaceae |
| Silene micropetala | Lichtnelke Kleinkronige | Small- petal Catchfly | Caryophyllaceae |
| Silene mollissima | Leimkraut Weiches | Soft Catchfly | Caryophyllaceae |
| Silene multicaulis | Leimkraut Vielstängeliges | Many- stemmed Catchfly | Caryophyllaceae |
| Silene multiflora | Leimkraut Vielblütiges | Many- flowered Catchfly | Caryophyllaceae |
| Silene muscipula | Leimkraut Fliegenfallen | Flytrap Catchfly | Caryophyllaceae |
| Silene neglecta | Leimkraut Übersehenes | Neglected Catchfly | Caryophyllaceae |
| Silene nemoralis | Leimkraut Hain | Roman Catchfly | Caryophyllaceae |
| Silene nicaeensis | Leimkraut Nizza | Eurasian Catchfly | Caryophyllaceae |
| Silene noctiflora | Lichtnelke Acker | Night- flowering Catchfly | Caryophyllaceae |
| Silene nocturna | Leimkraut Nacht | Night- Catchfly | Caryophyllaceae |
| Silene notarisii | Leimkraut Notaris' | Notaris's Catchfly | Caryophyllaceae |
| Silene nutans | Leimkraut Nickendes | Eurasian Catchfly | Caryophyllaceae |
| Silene obtusifolia | Leimkraut Stumpfblättriges | Blunt- leaved Catchfly | Caryophyllaceae |
| Silene oligantha | Leimkraut Wenigblütiges | Few- flowered Catchfly | Caryophyllaceae |
| Silene oropediorum | Leimkraut Gebirgsfüßiges | Mountain Catchfly | Caryophyllaceae |
| Silene otites | Leimkraut Ohrlöffel | Spanish Catchfly | Caryophyllaceae |
| Silene paradoxa | Leimkraut Sonderbares | Paradoxal Catchfly | Caryophyllaceae |
| Silene parnassica | Leimkraut Mt. Parnassos | Mt. Parnassos Catchfly | Caryophyllaceae |
| Silene parnassica ssp. vourinensis | Leimkraut Mt. Vourinos | Mt. Vourinos Catchfly | Caryophyllaceae |
| Silene pendula | Leimkraut Hängendes | Nodding Catchfly | Caryophyllaceae |
| Silene pentelica | Leimkraut Penteli | Mt. Penteli Catchfly | Caryophyllaceae |
| Silene petrarchae | Leimkraut Petrarcas | Petrarca's Catchfly | Caryophyllaceae |
| Silene pichiana | Leimkraut Pichi's | Pichi's Catchfly | Caryophyllaceae |
| Silene pinetorum | Leimkraut Pinienwald | Pinewood Catchfly | Caryophyllaceae |
| Silene portensis | Leimkraut Porto | Porto Catchfly | Caryophyllaceae |
| Silene psamittis | Leimkraut Sand | Sand Catchfly | Caryophyllaceae |
| Silene pseudoatocion | Leimkraut Nordafrikanisches | North- African Catchfly | Caryophyllaceae |
| Silene pusilla | Leimkraut Vierzähniges | Little Alpine Catchfly | Caryophyllaceae |
| Silene pusilla ssp chromodonta | Leimkraut Farbzähniges | Colour- teethed Catchfly | Caryophyllaceae |
| Silene pusilla ssp tymphaea | Leimkraut Mönch | Monk Catchfly | Caryophyllaceae |
| Silene radicosa | Leimkraut Wurzel | Root Catchfly | Caryophyllaceae |
| Silene ramosissima | Leimkraut Verzweigtes | Branched Catchfly | Caryophyllaceae |
| Silene reinholdii | Leimkraut Reinholds | Reinhold's Catchfly | Caryophyllaceae |
| Silene rosulata ssp. sanctae-theresiae | Leimkraut Santa Teresa | Santa Teresa Catchfly | Caryophyllaceae |
| Silene rupestris | Leimkraut Felsen | Rock Catchfly | Caryophyllaceae |
| Silene salamandra | Leimkraut Rhodisches | Rhodian Catchfly | Caryophyllaceae |
| Silene sartorii | Leimkraut Sartoris | Sartori's Catchfly | Caryophyllaceae |
| Silene saxifraga | Leimkraut Steinbrech | Saxifrage Catchfly | Caryophyllaceae |
| Silene scabriflora | Leimkraut Raublütiges | Scabrous- flowered Catchfly | Caryophyllaceae |
| Silene schwarzenbergeri | Leimkraut Schwarzenbergers | Schwarzenberger's Catchfly | Caryophyllaceae |
| Silene sclerocarpa | Leimkraut Hartfrüchtiges | Hard- fruited Catchfly | Caryophyllaceae |
| Silene secundiflora | Leimkraut Einseitswendiges | Secund Catchfly | Caryophyllaceae |
| Silene sedoides | Leimkraut Mauerpfeffer | Hairy Catchfly | Caryophyllaceae |
| Silene sennenii | Leimkraut Sennens | Sennen's Catchfly | Caryophyllaceae |
| Silene sieberi | Leimkraut Siebers | Sieber's Catchfly | Caryophyllaceae |
| Silene spinescens | Leimkraut Stachliges | Spiny Catchfly | Caryophyllaceae |
| Silene stricta | Leimkraut Steifes | Stiff Catchfly | Caryophyllaceae |
| Silene stockenii | Leimkraut Stockens | Stocken's Catchfly | Caryophyllaceae |
| Silene subintegra | Lichtnelke Ganzrandige | Entire Catchfly | Caryophyllaceae |
| Silene succulenta | Leimkraut Fleischiges | Succulent Catchfly | Caryophyllaceae |
| Silene tatarica | Leimkraut Tatarisches | Tatarian Catchfly | Caryophyllaceae |
| Silene taygetea | Leimkraut Taygettos | Taygettos Catchfly | Caryophyllaceae |
| Silene tomentosa | Leimkraut Filziges | Tomentose Catchfly | Caryophyllaceae |
| Silene tridentata | Leimkraut Dreizähniges | Three- toothed Catchfly | Caryophyllaceae |
| Silene triflora | Leimkraut Dreiblütiges | Three- flowered Catchfly | Caryophyllaceae |
| Silene uniflora | Leimkraut Einköpfiges | Sea Catchfly | Caryophyllaceae |
| Silene urvillei | Leimkraut d'Urvilles | d'Urville's Catchfly | Caryophyllaceae |
| Silene vallesia | Leimkraut Walliser | Valaisian Catchfly | Caryophyllaceae |
| Silene variegata | Leimkraut Buntes | Variegated Catchfly | Caryophyllaceae |
| Silene velutina | Leimkraut Samt | Velvet Catchfly | Caryophyllaceae |
| Silene viridiflora | Leimkraut Grünblütiges | Green- flowered Catchfly | Caryophyllaceae |
| Silene viscaria | Pechnelke Gewöhnliche | Sticky Catchfly | Caryophyllaceae |
| Silene viscosa | Leimkraut Klebriges | White Sticky Catchfly | Caryophyllaceae |
| Silene vulgaris | Leimkraut Gewöhnliches | Common Bladder Catchfly | Caryophyllaceae |
| Silene x hampeana | Lichtnelke Bastard | Hybrid- Campion | Caryophyllaceae |
| Siler montanum | Laserkraut Berg | Narrow- leaved Sermountain | Apiaceae |
| Siler zernyi | Laserkraut Zernys | Zerny's Sermountain | Apiaceae |
| Silphium perfoliatum | Silphie Durchwachsene | Cup Plant | Asteraceae |
| Silphiodaucus prutenicus | Laserkraut Preußisches | Prussian Sermountain | Apiaceae |
| Silybum eburneum | Mariendistel Silberne | Silver Milk- Thistle | Asteraceae |
| Silybum marianum | Mariendistel Gewöhnliche | Blessed Milk- Thistle | Asteraceae |
| Simethis mattiazzi | Simethis Mattiazzis | Mattiazzi's Simethis | Asphodelaceae |
| Siphonostegia syriaca | Siphonostegia Syrische | Syrian Siphonostegia | Orobanchaceae |
| Sison amomum | Sison Gewürz | Stone Parsley | Apiaceae |
| Sison segetum | Sison Saat | Corn Parsley | Apiaceae |
| Sisyrinchium angustifolium | Grasschwertel Schmalblättriges | Narrow- leaf Blue-eyed Grass | Iridaceae |
| Sisyrinchium californicum | Grasschwertel Kalifornisches | Californian Blue-eyed Grass | Iridaceae |
| Sisyrinchium laxum | Grasschwertel Lockeres | Veined Yellow-eyed Grass | Iridaceae |
| Sisyrinchium montanum | Grasschwertel Berg | American Blue-eyed Grass | Iridaceae |
| Sisyrinchium rosulatum | Grasschwertel Rosettenbildendes | Annuel Blue-eyed Grass | Iridaceae |
| Sisyrinchium striatum | Grasschwertel Gestreiftes | Pale Yellow-eyed Grass | Iridaceae |
| Sium latifolium | Merk Breitblättriger | Great Water- Parsnip | Apiaceae |
| Sium sisarum | Zuckerwurzel | Skirret | Apiaceae |
| Sixalix atropurpurea | Skabiose Samt | Mediterranean Sweet Scabious | Dipsacaceae |
| Skimmia japonica | Skimmia japonica | Japanese Skimmia | Rutaceae |
| Smilax aspera | Stechwinde Raue | Rough Bindweed | Smilacaceae |
| Smilax excelsa | Stechwinde Hohe | High Bindweed | Smilacaceae |
| Smyrnium creticum | Gelbdolde Kretische | Cretan Alexanders | Apiaceae |
| Smyrnium olusatrum | Gelbdolde Gespenst | Common Alexanders | Apiaceae |
| Smyrnium perfoliatum | Gelbdolde Stängelumfassende | Perfoliate Alexanders | Apiaceae |
| Solanum alatum | Nachtschatten Rotfrüchtiger | Red- fruited Nightshade | Solanaceae |
| Solanum americanum | Nachtschatten Amerikanischer | American Black Nightshade | Solanaceae |
| Solanum bonariense | Nachtschatten Argentinischer | Buenos Aires Nightshade | Solanaceae |
| Solanum carolinense | Nachtschatten Carolina | Carolina Nightshade | Solanaceae |
| Solanum chacoense | Wild- Kartoffel | Wild Potato | Solanaceae |
| Solanum chenopodioides | Nachtschatten Gänsefußblättriger | Goosefoot Nightshade | Solanaceae |
| Solanum chrysotrichum | Nachtschatten Goldhaariger | Giant Devil's Fig | Solanaceae |
| Solanum citrullifolium | Nachtschatten Melonenblatt | Watermelon Nightshade | Solanaceae |
| Solanum decipiens | Nachtschatten Täuschender | Schulte's Nightshade | Solanaceae |
| Solanum dulcamara | Nachtschatten Bittersüßer | Climbing Nightshade | Solanaceae |
| Solanum elaeagnifolium | Nachtschatten Silberblättriger | Silverleaf- Nightshade | Solanaceae |
| Solanum herculeum | Nachtschatten Gibraltar | Osbecks Nightshade | Solanaceae |
| Solanum laciniatum | Nachtschatten Schlitzblättriger | Kangaroo Apple | Solanaceae |
| Solanum laxum | Nachtschatten Jasmin | Jasmine Nightshade | Solanaceae |
| Solanum linnaeanum | Sodomsapfel | Devil's Apple | Solanaceae |
| Solanum luteovirescens | Nachtschatten Gelbgrüner | Yellow- green Nightshade | Solanaceae |
| Solanum lycopersicum | Tomate Kultur | Tomato | Solanaceae |
| Solanum marginatum | Nachtschatten Weißrandiger | White- margined Nightshade | Solanaceae |
| Solanum mauritianum | Nachtschatten Wollfrüchtiger | Tobacco Tree | Solanaceae |
| Solanum melongena | Aubergine | Eggplant | Solanaceae |
| Solanum nigrum | Nachtschatten Schwarzer | Black Nightshade | Solanaceae |
| Solanum nodiflorum | Nachtschatten Nickendblütiger | Nodding Nightshade | Solanaceae |
| Solanum physalifolium | Nachtschatten Glanzfrüchtiger | Groundcherry Nightshade | Solanaceae |
| Solanum pimpinellifolium | Tomate Johannisbeer | Curant Tomato | Solanaceae |
| Solanum pseudocapsicum | Jerusalemkirsche | Jerusalem Cherry | Solanaceae |
| Solanum ptychanthum | Nachtschatten Westindischer | Eastern Black Nightshade | Solanaceae |
| Solanum rostratum | Nachtschatten Stachel | Buffalobur Nightshade | Solanaceae |
| Solanum sarrachoides | Nachtschatten Saracha | Saracha Nightshade | Solanaceae |
| Solanum sisymbriifolium | Nachtschatten Rautenblättriger | Viscid Nightshade | Solanaceae |
| Solanum torvum | Pokastrauch | Devil's Fig | Solanaceae |
| Solanum triflorum | Nachtschatten Dreiblütiger | Cutleaf Nightshade | Solanaceae |
| Solanum tuberosum | Kultur- Kartoffel | Potato | Solanaceae |
| Solanum villosum | Nachtschatten Gelbfrüchtiger | Yellow Nightshade | Solanaceae |
| Soldanella alpina | Alpenglöckchen Gewöhnliches | Alpine Snowbell | Primulaceae |
| Soldanella austriaca | Alpenglöckchen Österreichisches | Austrian Snowbell | Primulaceae |
| Soldanella calabrella | Alpenglöckchen Kalabrisches | Yellow- spotted Snowbell | Primulaceae |
| Soldanella chrysosticta | Alpenglöckchen Golddrüsiges | Yellow- spotted Snowbell | Primulaceae |
| Soldanella major | Alpenglöckchen Großes | Large Snowbell | Primulaceae |
| Soldanella minima | Alpenglöckchen Kleinstes | Least Snowbell | Primulaceae |
| Soldanella montana | Alpenglöckchen Berg | Mountain Snowbell | Primulaceae |
| Soldanella pindicola | Alpenglöckchen Pindos | Pindus Snowbell | Primulaceae |
| Soldanella pusilla ssp. alpicola | Alpenglöckchen Zwerg | Dwarf Snowbell | Primulaceae |
| Soldanella rhodopaea | Alpenglöckchen Rhodopen | Rhodope Snowbell | Primulaceae |
| Soldanella villosa | Alpenglöckchen Haariges | Hairy Snowbell | Primulaceae |
| Soleirolia soleirolii | Bubikopf | Mind-your-own-business | Urticaceae |
| Solenanthus albanicus | Hundszunge Albanische | Albanian Hound's Tongue | Boraginaceae |
| Solenanthus apenninus | Hundszunge Apeninnen | Appenine Hound's Tongue | Boraginaceae |
| Solenanthus reverchonii | Hundszunge Reverschon's | Reverchon's Hound's Tongue | Boraginaceae |
| Solenanthus scardicus | Hundszunge Balkan | Macedonian Hound's Tongue | Boraginaceae |
| Solenanthus stamineus | Hundszunge Langmännige | Long- stamen Hound's Tongue | Boraginaceae |
| Solenopsis bivonae | Zwerglobelie Bivona | Bivona's Solenopsis | Campanulaceae |
| Solenopsis corsica | Zwerglobelie Korsika | Corsican Solenopsis | Campanulaceae |
| Solenopsis laurentia | Zwerglobelie Gewöhnliche | Dwarf Solenopsis | Campanulaceae |
| Solenopsis minima | Zwerglobelie Balearen | Balearic Solenopsis | Campanulaceae |
| Solenopsis minuta | Zwerglobelie Kleine | Little Solenopsis | Campanulaceae |
| Solidago altissima | Goldrute Hohe | Tall Goldenrod | Asteraceae |
| Solidago canadensis | Goldrute Kanadische | Canadian Goldenrod | Asteraceae |
| Solidago gigantea | Goldrute Riesen | Giant Goldenrod | Asteraceae |
| Solidago litoralis | Goldrute Strand | Beach Goldenrod | Asteraceae |
| Solidago rugosa | Goldrute Runzlige | Rough - stemmed Goldenrod | Asteraceae |
| Solidago virgaurea | Goldrute Gewöhnliche | Common Goldenrod | Asteraceae |
| Soliva sessilis | Stachelkraut Rasen | Field Burweed | Asteraceae |
| Soliva stolonifera | Stachelkraut Ausläuferbildendes | Carpet Burweed | Asteraceae |
| Sonchus arvensis ssp. arvensis | Gänsedistel Acker Gewöhnliche | Common Field Sowthistle | Asteraceae |
| Sonchus arvensis ssp. uliginosus | Gänsedistel Acker Drüsenlose | Glandless Field Sowthistle | Asteraceae |
| Sonchus asper | Gänsedistel Dornige | Spiny Sowthistle | Asteraceae |
| Sonchus crassifolius | Gänsedistel Dickblättrige | Thick- leaved Sowthistle | Asteraceae |
| Sonchus maritimus | Gänsedistel Strand | Sea Sowthistle | Asteraceae |
| Sonchus microcephalus | Gänsedistel Kleinköpfige | Small- headed Sowthistle | Asteraceae |
| Sonchus oleraceus | Gänsedistel Kohl | Common Sowthistle | Asteraceae |
| Sonchus palustris | Gänsedistel Sumpf | Marsh Sowthistle | Asteraceae |
| Sonchus pustulatus | Gänsedistel Bläschen | Blistered Sowthistle | Asteraceae |
| Sonchus tenerrimus | Gänsedistel Zarte | Slender Sowthistle | Asteraceae |
| Sorbaria aitchisonii | Fiederspiere Himalaja | Himalajan False Spirea | Rosaceae |
| Sorbaria sorbifolia | Fiederspiere Ebereschen | Sibirian False Spirea | Rosaceae |
| Sorbaria tomentosa | Fiederspiere Kashmir | Kashmirian False Spirea | Rosaceae |
| Sorbus aria | Mehlbeere Gewöhnliche | Common Whitebeam | Rosaceae |
| Sorbus aucuparia | Eberesche Gewöhnliche | European Rowan | Rosaceae |
| Sorbus austriaca | Mehlbeere Österreichische | Austrian Whitebeam | Rosaceae |
| Sorbus chamaemespilus | Mehlbeere Zwerg | Alpine Whitebeam | Rosaceae |
| Sorbus collina | Mehlbeere Hügel | Hill Whitebeam | Rosaceae |
| Sorbus danubialis | Mehlbeere Donau | Danube Whitebeam | Rosaceae |
| Sorbus domestica | Speierling | True Service Tree | Rosaceae |
| Sorbus graeca | Mehlbeere Griechische | Greek Whitebeam | Rosaceae |
| Sorbus hostii | Mehlbeere Hosts | Host's Whitebeam | Rosaceae |
| Sorbus intermedia | Mehlbeere Schwedische | Swedish Whitebeam | Rosaceae |
| Sorbus latifolia | Mehlbeere Breitblättrige | Broad- Leaved Whitebeam | Rosaceae |
| Sorbus mougeotii | Mehlbeere Berg | Pyrenean Whitebeam | Rosaceae |
| Sorbus sudetica | Mehlbeere Sudeten | Sudetan Whitebeam | Rosaceae |
| Sorbus torminalis | Elsbeere | Wild Service Tree | Rosaceae |
| Sorbus umbellata | Mehlbeere Dolden | Umbellate Whitebeam | Rosaceae |
| Sorbus x pinnatifida | Eberesche Thüringer | Thuringian Whitebeam | Rosaceae |
| Sparganium angustifolium | Igelkolben Schmalblättriger | Narrowleaf Bur- Reed | Typhaceae |
| Sparganium emersum | Igelkolben Einfacher | Unbranched Bur- Reed | Typhaceae |
| Sparganium erectum | Igelkolben Ästiger | Branched Bur- Reed | Typhaceae |
| Sparganium hyperboreum | Igelkolben Nördlicher | Northern Bur- Reed | Typhaceae |
| Sparganium natans | Igelkolben Zwerg | Dwarf Bur- Reed | Typhaceae |
| Spartina alterniflora | Schlickgras Glattes | Smooth Cordgrass | Poaceae |
| Spartina anglica | Schlickgras Englisches | Common Cordgrass | Poaceae |
| Spartina densiflora | Schlickgras Dichtblütiges | Dense- flowered Cordgrass | Poaceae |
| Spartina maritima | Schlickgras Niederes | Small Cordgrass | Poaceae |
| Spartina pectinata | Schlickgras Prärie | Prairie Cordgrass | Poaceae |
| Spartina versicolor | Schlickgras Verschiedenfarbiges | Variegated Cordgrass | Poaceae |
| Spartina x townsendii | Schlickgras Townsends | Townsend's Cordgrass | Poaceae |
| Spartium junceum | Binsenginster Spanischer | Spanish Broom | Fabaceae |
| Spergula arvensis | Spergel Acker | Corn Spurry | Caryophyllaceae |
| Spergula morisonii | Spergel Frühlings | Morison's Spurry | Caryophyllaceae |
| Spergula pentandra | Spergel Fünfmänniger | Five- stamen Spurry | Caryophyllaceae |
| Spergula viscosa | Spergel Klebriger | Sticky Spurry | Caryophyllaceae |
| Spergularia australis | Schuppenmiere Südliche | Southern Sandspurry | Caryophyllaceae |
| Spergularia bocconei | Schuppenmiere Boccones | Boccone's Sandspurry | Caryophyllaceae |
| Spergularia capillacea | Schuppenmiere Haarstängelige | Slender Sandspurry | Caryophyllaceae |
| Spergularia diandra | Schuppenmiere Zweimännige | Two- Stamen Sandspurry | Caryophyllaceae |
| Spergularia echinosperma | Schuppenmiere Igelsamige | Bristleseed Sandspurry | Caryophyllaceae |
| Spergularia fimbriata | Schuppenmiere Fransen | Fringed Sandspurry | Caryophyllaceae |
| Spergularia flaccida | Schuppenmiere Trügerische | Cheating Sandspurry | Caryophyllaceae |
| Spergularia heldreichii | Schuppenmiere Heldreichs | Heldreich's Sandspurry | Caryophyllaceae |
| Spergularia macrorhiza | Schuppenmiere Großwurzelige | Large- rooted Sandspurry | Caryophyllaceae |
| Spergularia madoniaca | Schuppenmiere Madonie | Madonie Sandspurry | Caryophyllaceae |
| Spergularia media | Schuppenmiere Flügelsamige | Greater Sandspurry | Caryophyllaceae |
| Spergularia melanocaulos | Schuppenmiere Südliche | Southern Sandspurry | Caryophyllaceae |
| Spergularia nicaeensis | Schuppenmiere Nizza | Nice Sandspurry | Caryophyllaceae |
| Spergularia purpurea | Schuppenmiere Purpur | Purple Sandspurry | Caryophyllaceae |
| Spergularia rubra | Schuppenmiere Rote | Red Sandspurry | Caryophyllaceae |
| Spergularia rupicola | Schuppenmiere Felsen | Rock Sandspurry | Caryophyllaceae |
| Spergularia salina | Schuppenmiere Salz | Lesser Sandspurry | Caryophyllaceae |
| Spergularia segetalis | Schuppenmiere Saat | Corn Sandspurry | Caryophyllaceae |
| Spergularia tangerina | Schuppenmiere Tanger | Tanger Sandspurry | Caryophyllaceae |
| Spergularia x kurkae | Schuppenmiere Schwarzsamiger | Kurka's Sandspurry | Caryophyllaceae |
| Spinacia oleracea | Spinat Echter | Spinach | Chenopodiaceae |
| Spiraea alba | Spierstrauch Weißer | White Meadowsweet | Rosaceae |
| Spiraea cana | Spierstrauch Graufilziger | Grey Meadowsweet | Rosaceae |
| Spiraea cantoniensis | Spierstrauch Kanton | Kanton Meadowsweet | Rosaceae |
| Spiraea chamaedryfolia | Spierstrauch Gamander | Germander Meadowsweet | Rosaceae |
| Spiraea crenata | Spierstrauch Kerb | Crenate Meadowsweet | Rosaceae |
| Spiraea decumbens | Spierstrauch Kärtner | Haquet's Meadowsweet | Rosaceae |
| Spiraea douglasii | Spierstrauch Douglas | Western Meadowsweet | Rosaceae |
| Spiraea hypericifolia | Spierstrauch Johanniskrautblättriger | Iberian Meadowsweet | Rosaceae |
| Spiraea japonica | Spierstrauch Japanischer | Japanese Meadowsweet | Rosaceae |
| Spiraea media | Spierstrauch Karpaten | Crenate Meadowsweet | Rosaceae |
| Spiraea nipponica | Spierstrauch Nippon | Nippon Meadowsweet | Rosaceae |
| Spiraea salicifolia | Spierstrauch Weidenblättriger | Willowleaf Meadowsweet | Rosaceae |
| Spiraea thunbergii | Spierstrauch Thunbergs | Thunberg's Meadowsweet | Rosaceae |
| Spiraea tomentosa | Spierstrauch Filziger | Rosy Meadowsweet | Rosaceae |
| Spiraea trilobata | Spierstrauch Dreilappiger | Asian Meadowsweet | Rosaceae |
| Spiraea x arguta | Spierstrauch Braut | Garland Meadowsweet | Rosaceae |
| Spiraea x billardii | Spierstrauch Bastard | Billard's Meadowsweet | Rosaceae |
| Spiraea x cinerea | Spierstrauch Aschgrauer | Ashgrey Meadowsweet | Rosaceae |
| Spiraea x vanhouttei | Spierstrauch Belgischer | Van Houtte's Meadowsweet | Rosaceae |
| Spiranthes aestivalis | Wendelorchis Sommer | Summer Lady's Tresses | Orchidaceae |
| Spiranthes spiralis | Wendelorchis Herbst | Autumn Lady's Tresses | Orchidaceae |
| Spirobassia hirsuta | Radmelde Rauhaarige | Hairy Smotherweed | Chenopodiaceae |
| Spirodela polyrhiza | Teichlinse Vielwurzelige | Duckmeat Common | Amaryllidaceae |
| Sporobolus cryptandrus | Fallsamengras Verstecktblütiges | Sand Dropseed | Poaceae |
| Sporobolus indicus | Fallsamengras Indisches | Smutgrass | Poaceae |
| Sporobolus neglectus | Fallsamengras Vernachlässigtes | Small Dropseed | Poaceae |
| Sporobolus pungens | Fallsamengras Stechendes | Seashore Dropseed | Poaceae |
| Sporobolus vaginiflorus | Fallsamengras Scheidenblütiges | Sheathed Dropseed | Poaceae |
| Stachys alpina | Ziest Alpen | Limestone Hedgenettle | Lamiaceae |
| Stachys angustifolia | Ziest Schmalblättriger | Narrow- leaved Hedgenettle | Lamiaceae |
| Stachys annua | Ziest Einjähriger | Annual Hedgenettle | Lamiaceae |
| Stachys arenaria | Ziest Sand | Purple- flowerd Hedgenettle | Lamiaceae |
| Stachys arvensis | Ziest Acker | Field Hedgenettle | Lamiaceae |
| Stachys atherocalyx | Ziest Grannenkelchiger | Mucronate Hedgenettle | Lamiaceae |
| Stachys brachyclada | Ziest Kurzästiger | Short- branched Hedgenettle | Lamiaceae |
| Stachys byzantina | Ziest Woll | Wooly Hedgenettle | Lamiaceae |
| Stachys candida | Ziest Schnee | Furry- leaved Hedgenettle | Lamiaceae |
| Stachys canescens | Ziest Messenischer | Messenian Hedgenettle | Lamiaceae |
| Stachys chrysantha | Ziest Lakonischer | Lakonian Hedgenettle | Lamiaceae |
| Stachys circinata | Ziest Kreisblättriger | Tyrrhenian Hedgenettle | Lamiaceae |
| Stachys corsica | Ziest Korsischer | Corsian Hedgenettle | Lamiaceae |
| Stachys cretica | Ziest Kretischer | Cretan Hedgenettle | Lamiaceae |
| Stachys euboica | Ziest Euböa | Evvian Hedgenettle | Lamiaceae |
| Stachys germanica | Ziest Deutscher | Downy Hedgenettle | Lamiaceae |
| Stachys glutinosa | Ziest Klebriger | Sticky Hedgenettle | Lamiaceae |
| Stachys graeca | Ziest Griechischer | Greek Hedgenettle | Lamiaceae |
| Stachys heraclea | Ziest Herakleia | Heraclea Hedgenettle | Lamiaceae |
| Stachys iberica | Ziest Kaukasicher | Caucasian Hedgenettle | Lamiaceae |
| Stachys ionica | Ziest Ionischer | Ionian Hedgenettle | Lamiaceae |
| Stachys iva | Ziest Mazedonischer | Macedonian Hedgenettle | Lamiaceae |
| Stachys maritima | Ziest Strand | Sea Hedgenettle | Lamiaceae |
| Stachys marrubiifolia | Ziest Andornblättriger | Tyrrhenian Hedgenettle | Lamiaceae |
| Stachys menthifolia | Ziest Minzeblättriger | Mint- leaved Hedgenettle | Lamiaceae |
| Stachys mollissima | Ziest Weicher | Soft Hedgenettle | Lamiaceae |
| Stachys mucronata | Ziest Stachelspitziger | Mucronate Hedgenettle | Lamiaceae |
| Stachys obliqua | Ziest Schiefer | Oblique Hedgenettle | Lamiaceae |
| Stachys ocymastrum | Ziest Basilikum | Italian Hedgenettle | Lamiaceae |
| Stachys palustris | Ziest Sumpf | Marsh Hedgenettle | Lamiaceae |
| Stachys parolinii | Ziest Parolinis | Parolini's Hedgenettle | Lamiaceae |
| Stachys plumosa | Ziest Federiger | Feathery Hedgenettle | Lamiaceae |
| Stachys recta | Ziest Aufrechter | Stiff Hedgenettle | Lamiaceae |
| Stachys serbica | Ziest Serbischer | Serbian Hedgenettle | Lamiaceae |
| Stachys spinosa | Ziest Dorniger | Spiny Hedgenettle | Lamiaceae |
| Stachys spinulosa | Ziest Dörnchen | Small Spine Hedgenettle | Lamiaceae |
| Stachys spreitzenhoferi | Ziest Spreitzenhofers | Spreitzenhofer's Hedgenettle | Lamiaceae |
| Stachys spruneri | Ziest Spruners | Spruner's Hedgenettle | Lamiaceae |
| Stachys swainsonii | Ziest Swainsons | Swainson's Hedgenettle | Lamiaceae |
| Stachys tetragona | Ziest Vierkantiger | Four- sided Hedgenetlle | Lamiaceae |
| Stachys thirkei | Ziest Thirkes | Thirke's Hedgenettle | Lamiaceae |
| Stachys tournefortii | Ziest Tourneforts | Tournefort's Hedgenettle | Lamiaceae |
| Stachys tymphaea | Ziest Tymphaea | Tymphaea Hedgenettle | Lamiaceae |
| Stachys virgata | Ziest Ruten | Rod- shaped Hedgenettle | Lamiaceae |
| Stachys x ambigua | Ziest Zweifelhafter | Doubtful Hedgenettle | Lamiaceae |
| Staphisagria macrosperma | Rittersporn Mittelmeer | Mediterranean Stavesacre | Ranunculaceae |
| Staphisagria picta | Rittersporn Gefleckter | Spotted Stavesacre | Ranunculaceae |
| Staphisagria requienii | Rittersporn Requiens | Requien's Stavesacre | Ranunculaceae |
| Staphylea colchica | Pimpernuss Kolchische | Caucasian Bladdernut | Staphyleaceae |
| Staphylea pinnata | Pimpernuss Gewöhnliche | European Bladdernut | Staphyleaceae |
| Stauracanthus boivinii | Stechginster Boivins | Boivin's Gorse | Fabaceae |
| Stauracanthus genistoides | Stechginster Ginsterähnlicher | Broom- like Gorse | Fabaceae |
| Stauracanthus spectabilis | Stechginster Pracht | Splendid Gorse | Fabaceae |
| Stefanoffia daucoides | Stefanoffie Möhrenähnliche | Carot- like Stefanoffia | Apiaceae |
| Stegnogramma pozoi | Sumpffarn Pozois | Pozo's Marsh Fern | Thelypteridaceae |
| Stellaria alsine | Sternmiere Bach | Bog Stichwood | Caryophyllaceae |
| Stellaria apetala | Sternmiere Bleiche | Lesser Chickweed | Caryophyllaceae |
| Stellaria aquatica | Sternmiere Wasser | Water Chickweed | Caryophyllaceae |
| Stellaria cupaniana | Sternmiere Cupanis | Cupani's Chickweed | Caryophyllaceae |
| Stellaria glochidosperma | Sternmiere Stachelsamige | Mountain Chickweed | Caryophyllaceae |
| Stellaria graminea | Sternmiere Gras | Grass- like Stichwort | Caryophyllaceae |
| Stellaria holostea | Sternmiere Echte | Greater Stichwort | Caryophyllaceae |
| Stellaria longifolia | Sternmiere Langblättrige | Longleaf- Stichwort | Caryophyllaceae |
| Stellaria media | Sternmiere Vogel | Common Chickweed | Caryophyllaceae |
| Stellaria palustris | Sternmiere Sumpf | Marsh Stichwort | Caryophyllaceae |
| Stellaria neglecta | Sternmiere Auenwald | Greater Chickweed | Caryophyllaceae |
| Stellaria nemorum | Sternmiere Hain | Wood Chickweed | Caryophyllaceae |
| Stellaria ruderalis | Sternmiere Brachland | Ruderal Chickweed | Caryophyllaceae |
| Stenotaphrum secundatum | Rillenspelzgras Einseitiges | St- Augustine Grass | Poaceae |
| Stephanandra incisa | Kranzspiere Kleine | Laceshrub | Rosaceae |
| Stephanandra tanakae | Kranzspiere Große | Japanese Stephanandra | Rosaceae |
| Sternbergia clusiana | Sternbergie Großblütige | Clusius's Sternbergia | Amaryllidaceae |
| Sternbergia colchiciflora | Sternbergie Schmalblättrige | Slender Sternbergia | Amaryllidaceae |
| Sternbergia lutea | Sternbergie Gelbe | Yellow Sternbergia | Amaryllidaceae |
| Sternbergia vernalis | Sternbergie Frühlings | Spring Sternbergia | Amaryllidaceae |
| Stoibrax dichotomum | Gabelige Stoibrax | Spanish Stoibrax | Apiaceae |
| Stratiotes aloides | Krebsschere | Water Soldier | Hydrocharitaceaea |
| Strelitzia nicolai | Strelitzie Baum | Giant White Bird of Paradise | Strelitziaceae |
| Strelitzia reginae | Strelitzie Königinnen | Bird of Paradise | Strelitziaceae |
| Streptopus amplexifolius | Knotenfuß Stängelumfassender | Claspleaf Twistedstalk | Liliaceae |
| Stuckenia pectinata | Laichkraut Kamm | Fennel Pondweed | Potamogetonaceae |
| Stuckenia filiformis | Laichkraut Faden | Fineleaf Pondweed | Potamogetonaceae |
| Styphnolobium japonicum | Schnurbaum Japanischer | Pagoda Tree | Fabaceae |
| Suaeda altissima | Sode Hohe | Tall Sea- Blite | Chenopodiaceae |
| Suaeda maritima | Sode Strand | White Sea- Blite | Chenopodiaceae |
| Suaeda palaestina | Sode Palästina | Palestine Sea- Blite | Chenopodiaceae |
| Suaeda pannonica | Sode Große | Big Sea- Blite | Chenopodiaceae |
| Suaeda prostrata | Sode Zierliche | Small Sea- Blite | Chenopodiaceae |
| Suaeda pruinosa | Sode Bereifte | Pruinose Sea- Blite | Chenopodiaceae |
| Suaeda spicata | Sode Ährige | Spiked Sea- Blite | Chenopodiaceae |
| Suaeda splendens | Sode Transparent | Transparent Sea- Blite | Chenopodiaceae |
| Suaeda vera | Sode Strauchige | Shrubby Sea- Blite | Chenopodiaceae |
| Subularia aquatica | Pfriemenkresse Gewöhnliche | Water Awlwort | Chenopodiaceae |
| Succisa pinnatifida | Teufelsabbiss Gefiederter | Pinnatifid Devilsbit | Dipsacaceae |
| Succisa pratensis | Teufelsabbiss Gewöhnlicher | Common Devilsbit | Dipsacaceae |
| Succisella inflexa | Moorabbiss Eingebogener | Southern Succisella | Dipsacaceae |
| Sulla coronaria | Süßklee Kronen | Crown Sainfoin | Fabaceae |
| Sulla flexuosa | Süßklee Kronen | Crown Sainfoin | Fabaceae |
| Sulla glomerata | Süßklee Knäuel | Clustered Sainfoin | Fabaceae |
| Sulla spinosissima | Süßklee Dorniger | Spiny Sainfoin | Fabaceae |
| Swertia perennis | Sumpfstern Blauer | Marsh Felwort | Gentianaceae |
| Symphoricarpos albus | Schneebeere Gewöhnliche | Common Snowberry | Caprifoliaceae |
| Symphoricarpos orbiculatus | Korallenbeere | Coralberry | Caprifoliaceae |
| Symphyotrichum dumosum | Herbstaster Kissen | Bushy Aster | Asteraceae |
| Symphyotrichum ericoides | Herbstaster Myrten | White Heath Aster | Asteraceae |
| Symphyotrichum laeve | Herbstaster Kahle | Smooth Aster | Asteraceae |
| Symphyotrichum lanceolatum | Herbstaster Lanzettblättrige | Tall White Aster | Asteraceae |
| Symphyotrichum lateriflorum | Herbstaster Calico | Calico Aster | Asteraceae |
| Symphyotrichum novae- angliae | Herbstaster Neuengland | New England Aster | Asteraceae |
| Symphyotrichum novi belgii | Herbstaster Neubelgien | New- York Aster | Asteraceae |
| Symphyotrichum pilosum | Herbstaster Behaarte | Awl Aster | Asteraceae |
| Symphyotrichum squamatum | Herbstaster Salzmarsch | Saltmarsh Aster | Asteraceae |
| Symphyotrichum tradescantii | Herbstaster Kleinblütige | Tradescant's Aster | Asteraceae |
| Symphyotrichum x salignum | Herbstaster Weidenblättrige | Willow- leaved Aster | Asteraceae |
| Symphyotrichum x versicolor | Herbstaster Verschiedenfarbig | Variegated Aster | Asteraceae |
| Symphytum anatolicum | Beinwell Anatolischer | Anatolian Comfrey | Boraginaceae |
| Symphytum asperum | Beinwell Rauer | Prickly Comfrey | Boraginaceae |
| Symphytum bulbosum | Beinwell Knollen | Bulbous Comfrey | Boraginaceae |
| Symphytum caucasicum | Beinwell Kaukasus | Caucasian Comfrey | Boraginaceae |
| Symphytum circinale | Beinwell Rhodischer | Rhodian Comfrey | Boraginaceae |
| Symphytum creticum | Beinwell Kretischer | Cretan Comfrey | Boraginaceae |
| Symphytum davisii | Beinwell Davis | Davis's Comfrey | Boraginaceae |
| Symphytum grandiflorum | Beinwell Großblütiger | Creeping Comfrey | Boraginaceae |
| Symphytum gussonei | Beinwell Gussone | Gussone's Comfrey | Boraginaceae |
| Symphytum insulare | Beinwell Insel | Island Comfrey | Boraginaceae |
| Symphytum officinale ssp. bohemicum | Beinwell Böhmischer | Bohemian Comfrey | Boraginaceae |
| Symphytum officinale ssp. officinale | Beinwell Arznei Gewöhnlicher | Common Comfrey | Boraginaceae |
| Symphytum orientale | Beinwell Orientalischer | White Comfrey | Boraginaceae |
| Symphytum ottomanum | Beinwell Ottomanen | Ottoman Comfrey | Boraginaceae |
| Symphytum tanaicense | Beinwell Sumpf | Samartian Cmfrey | Boraginaceae |
| Symphytum tuberosum | Beinwell Knoten | Tuberous Comfrey | Boraginaceae |
| Symphytum x uplandicum | Beinwell Futter | Russian Comfrey | Boraginaceae |
| Syringa vulgaris | Flieder Gewöhnlicher | Common Lilac | Oleaceae |