Plants — 23,508 Species

Coffee Senna

Senna occidentalis (L.) Link

Senna occidentalis is a foul-smelling toxic pantropical shrub that has traditional dietary and medicinal uses in South Asia.

Christmas Senna

Senna pendula (Humb. & Bonpl. ex Willd.) H.S.Irwin & Barneby

Senna pendula is a shrub species often confused with Senna bicapsularis, widely cultivated in Florida and historically sold as a garden plant in Australia.

reticulate senna

Senna reticulata (Willd.) H.S.Irwin & Barneby

Senna reticulata is a South American floodplain pioneer tree, used in folk medicine but considered a noxious weed by farmers.

Two-leaved Senna

Senna roemeriana (Scheele) H.S.Irwin & Barneby

Twoleaf senna (Senna roemeriana) is a toxic perennial flowering fabaceous plant native to the south-central US and northern Mexico.

Arsenic Bush

Senna septemtrionalis (Viv.) H.S.Irwin & Barneby

Senna septemtrionalis is an erect glabrous shrub native to the Americas, now introduced to other regions including Australia.

Kassod Tree

Senna siamea (Lam.) H.S.Irwin & Barneby

Senna siamea is a medium evergreen tree used for shade, food, medicine, timber and ornamental woodwork.

algarrobilla

Senna sophera (L.) Roxb.

Senna sophera is a glabrous shrub or small tree with yellow flowers, widespread globally in tropical and subtropical regions.

Sunshine Tree

Senna surattensis (Burm.f.) H.S.Irwin & Barneby

Senna surattensis is a shrub or small tree grown for ornament, shade, hedges, and used in traditional medicine, with young leaves eaten as a vegetable.

Oneleaf Senna

Senna uniflora (Mill.) H.S.Irwin & Barneby

Oneleaf senna (Senna uniflora) is a weedy flowering fabaceous plant sometimes used against another pernicious weed.

coast redwood

Sequoia sempervirens (D.Don) Endl.

Sequoia sempervirens (coast redwood) is the world's tallest tree species native to the North American Pacific coast, grown for timber and ornament.

giant sequoia

Sequoiadendron giganteum (Lindl.) J.T.Buchholz

Sequoiadendron giganteum, the giant sequoia, is the world's most massive tree species, native to California's western Sierra Nevada.

Heart-flowered serapias

Serapias cordigera L.

Serapias cordigera L. is an orchid species distributed from the Azores and south-central Europe to the Mediterranean.

Tongue Orchid

Serapias lingua L.

Serapias lingua, the tongue-orchid, is a Mediterranean-native orchid species found across parts of Europe, North Africa, and southern England.

Scarce Tongue-orchid

Serapias neglecta De Not.

Lesser Tongue-orchid

Serapias parviflora Parl.

Serapias parviflora Parl. is an orchid species that has established a growing colony on a London green roof.

long-lipped serapias

Serapias vomeracea (Burm.f.) Briq.

Serapias vomeracea is a variable herbaceous perennial orchid native to Mediterranean-Atlantic regions, pollinated by insects that use its flowers as shelter.

saw palmetto

Serenoa repens (W.Bartram) Small

Serenoa repens, commonly called saw palmetto, is a slow-growing long-lived palm endemic to the southeastern US and Mexico.

Narrowleaf Whitetop Aster

Sericocarpus linifolius (L.) Britton, Sterns & Poggenb.

Sericocarpus linifolius is a flowering plant native to the eastern United States, with conservation status varying by state.

Dixie aster

Sericocarpus tortifolius (Michx.) Nees

Sericocarpus tortifolius is a flowering plant found in the southeastern US Coastal Plain and nearby inland hard-rock provinces, growing in dry pine woodlands.

Bankrupt Bush

Seriphium plumosum L.

Stoebe plumosa (synonym Seriphium plumosum) is an Asteraceae flowering plant found across most of South Africa.

crowned saw-wort

Serratula coronata L.

Serratula is a Eurasian Asteraceae genus, with some species split into Klasea, that contains various flavonoids and ecdysteroids.

Saw-wort

Serratula tinctoria L.

Serratula tinctoria L., or saw-wort, is a perennial herb native to Europe that has been used for yellow dye and herbal preparations.

Marshmallow Spiderhead

Serruria aitonii R.Br.

Serruria aitonii, the marshmallow spiderhead, is a native fynbos shrub of the Western Cape.

Sandveld Spiderhead

Serruria decipiens R.Br.

Serruria decipiens (Sandveld spiderhead) is a fynbos flowering shrub native to the Western Cape, South Africa.