Plants — 23,046 Species

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Cirsium palustre (L.) Scop.
Asteraceae

Cirsium palustre (L.) Scop.

Cirsium palustre (L.) Scop.

Cirsium palustre is a tall Eurasian thistle, invasive in North America, that ranks highly for pollinator nectar production.

Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray
Asteraceae

Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray

Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray

Cirsium pitcheri, or Pitcher's thistle, is a monocarpic sand dune thistle native to the Great Lakes shores of North America.

Cirsium pumilum (Nutt.) Spreng.
Asteraceae

Cirsium pumilum (Nutt.) Spreng.

Cirsium pumilum (Nutt.) Spreng.

Cirsium pumilum (pasture thistle) is a North American thistle native to central/northeastern US and Ontario, with spiny leaves and sweet-scented flower heads.

Cirsium quercetorum (A.Gray) Jeps.
Asteraceae

Cirsium quercetorum (A.Gray) Jeps.

Cirsium quercetorum (A.Gray) Jeps.

Cirsium quercetorum is a perennial thistle endemic to California’s Outer Coast Ranges, growing in coastal grasslands and open woodlands.

Cirsium rhothophilum S.F.Blake
Asteraceae

Cirsium rhothophilum S.F.Blake

Cirsium rhothophilum S.F.Blake

Surf thistle (Cirsium rhothophilum) is a rare endemic California thistle that grows on central coast sand dunes.

Cirsium rivulare (Jacq.) All.
Asteraceae

Cirsium rivulare (Jacq.) All.

Cirsium rivulare (Jacq.) All.

Cirsium rivulare is a European perennial thistle, and its popular deep crimson cultivar has earned the RHS Award of Garden Merit.

Cirsium scariosum Nutt.
Asteraceae

Cirsium scariosum Nutt.

Cirsium scariosum Nutt.

Cirsium scariosum Nutt. is a highly variable biennial or perennial thistle with three main growth forms.

Cirsium spinosissimum (L.) Scop.
Asteraceae

Cirsium spinosissimum (L.) Scop.

Cirsium spinosissimum (L.) Scop.

Cirsium spinosissimum (spiniest thistle) is a spiny European thistle that grows in dry rocky areas across parts of continental Europe.

Cirsium texanum Buckley
Asteraceae

Cirsium texanum Buckley

Cirsium texanum Buckley

Cirsium texanum (Texas thistle) is a North American thistle that provides food for butterflies and goldfinches.

Cirsium undulatum (Nutt.) Spreng.
Asteraceae

Cirsium undulatum (Nutt.) Spreng.

Cirsium undulatum (Nutt.) Spreng.

Cirsium undulatum, the wavyleaf or gray thistle, is a perennial North American thistle species.

Cirsium vulgare (Savi) Ten.
Asteraceae

Cirsium vulgare (Savi) Ten.

Cirsium vulgare (Savi) Ten.

Cirsium vulgare, or spear thistle, is a spiny flowering thistle with documented edible and traditional uses.

Cissampelos pareira L.
Menispermaceae

Cissampelos pareira L.

Cissampelos pareira L.

Cissampelos pareira L. is a climbing plant with documented traditional medicinal uses across multiple regions.

Cissus erosa (L.) Rich.
Vitaceae

Cissus erosa (L.) Rich.

Cissus erosa (L.) Rich.

Cissus erosa (L.) Rich. is widely distributed in Mexico, Central America, South America to Brazil's southeast and Paraguay, found in campos, cerrados etc., with selected vouchers like Araújo et al. 618 and Alves - Araújo et al. 637.

Cissus quadrangularis L.
Vitaceae

Cissus quadrangularis L.

Cissus quadrangularis L.

Cissus quadrangularis L. is a fast-growing evergreen climber, long used traditionally to heal broken bones and related injuries.

Cissus trifoliata (L.) L.
Vitaceae

Cissus trifoliata (L.) L.

Cissus trifoliata (L.) L.

Cissus trifoliata is a poisonous New World woody vine in the grape family native to parts of the Americas and the Caribbean.

Cissus verticillata (L.) Nicolson & C.E.Jarvis
Vitaceae

Cissus verticillata (L.) Nicolson & C.E.Jarvis

Cissus verticillata (L.) Nicolson & C.E.Jarvis

Cissus verticillata is a tropical forest woody liana vine with various recorded uses in historical folk medicine.

Cistanche phelypaea (L.) Cout.
Orobanchaceae

Cistanche phelypaea (L.) Cout.

Cistanche phelypaea (L.) Cout.

Cistanche phelypaea is a chlorophyll-free obligate parasitic plant with yellow flowers, eaten as food, native across parts of Afro-Eurasia.

Cistus albidus L.
Cistaceae

Cistus albidus L.

Cistus albidus L.

Cistus albidus L. is a hairy grey-leaved Mediterranean shrub that produces purple to pink five-petaled flowers.

Cistus clusii Dunal
Cistaceae

Cistus clusii Dunal

Cistus clusii Dunal

Cistus clusii Dunal is a small branched Mediterranean shrub with white flowers and distinct hairy foliage.

Cistus creticus L.
Cistaceae

Cistus creticus L.

Cistus creticus L.

Cistus creticus is a variable decorative Mediterranean shrubby Cistaceae species often misidentified as Cistus incanus.

Cistus crispus L.
Cistaceae

Cistus crispus L.

Cistus crispus L.

Cistus crispus L. is a small flowering shrub native to north Africa and south-western Europe.

Cistus inflatus Pourr. ex Demoly
Cistaceae

Cistus inflatus Pourr. ex Demoly

Cistus inflatus Pourr. ex Demoly

Cistus inflatus is a small white-flowered shrub native to parts of the Iberian Peninsula and north-west France.

Cistus ladanifer L.
Cistaceae

Cistus ladanifer L.

Cistus ladanifer L.

Cistus ladanifer L. is a resin-producing Mediterranean shrub grown as an ornamental, with labdanum used in perfumery and herbal medicine.

Cistus laurifolius L.
Cistaceae

Cistus laurifolius L.

Cistus laurifolius L.

Cistus laurifolius, the mountain rockrose, is a widely cultivated Mediterranean shrub that regenerates after fire.

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