Rubiaceae
Rubia fruticosa Aiton
Rubia fruticosa Aiton
Rubia fruticosa Aiton is a flowering Rubiaceae plant native to three Atlantic island groups.
Rubia argyi (H.Lév. & Vaniot) H.Hara
Rubia argyi (H.Lév. & Vaniot) H.Hara
Rubia argyi is a herbaceous perennial flowering vine found in parts of East Asia, commonly known as East Asian madder.
Rubia agostinhoi Dans. & P.Silva
Rubia agostinhoi Dans. & P.Silva
Rubia agostinhoi is a climbing perennial plant native to most of the Azores, found in upland and lowland habitats.
Phuopsis stylosa (Trin.) G.Nicholson
Phuopsis stylosa (Trin.) G.Nicholson
Phuopsis stylosa, an aromatic Rubiaceae perennial from Caucasus/Iran, is widely grown as a scented garden plant.
Valantia hispida L.
Valantia hispida L.
Valantia hispida L. is a small annual self-supporting herb in the Rubiaceae family with simple broad leaves.
Cynanchica aristata (L.f.) P.Caputo & Del Guacchio
Cynanchica aristata (L.f.) P.Caputo & Del Guacchio
Cynanchica aristata is a small green flowering plant that grows best in rock gardens, troughs, or crevices.
Houstonia acerosa (A.Gray) Benth. & Hook.f.
Houstonia acerosa (A.Gray) Benth. & Hook.f.
Houstonia acerosa is a small flowering herb native to parts of Mexico and the southwestern U.S.
Houstonia canadensis Willd.
Houstonia canadensis Willd.
Canadian summer bluet (Houstonia canadensis) is a native North American plant found across parts of Canada and the eastern U.S.
Houstonia rubra Cav.
Houstonia rubra Cav.
Houstonia rubra (red bluet) is a small flowering herb in the Rubiaceae family native to the southwestern US and northern/central Mexico.
Houstonia purpurea var. montana (Small) Terrell
Houstonia purpurea var. montana (Small) Terrell
Houstonia purpurea var. montana, the rare Roan Mountain bluet, is an endangered US plant endemic to the southern Appalachians.
Spermacoce glabra Michx.
Spermacoce glabra Michx.
Spermacoce glabra, smooth false buttonweed, is a widespread New World coffee family plant native to North and South America.
Spermacoce prostrata Aubl.
Spermacoce prostrata Aubl.
Spermacoce prostrata Aubl. is a plant species with oppositely arranged leaves and axillary inflorescences, growing up to 40 cm tall.
Spermacoce neoterminalis Govaerts
Spermacoce neoterminalis Govaerts
Spermacoce neoterminalis is an endemic perennial herb of southern Florida in the Rubiaceae family.
Bouvardia longiflora (Cav.) Kunth
Bouvardia longiflora (Cav.) Kunth
Bouvardia longiflora, the scented bouvardia, is a widely cultivated fragrant flowering plant in the Rubiaceae family.
Oldenlandiopsis callitrichoides (Griseb.) Terrell & W.H.Lewis
Oldenlandiopsis callitrichoides (Griseb.) Terrell & W.H.Lewis
Oldenlandiopsis callitrichoides is the only species in the monospecific Rubiaceae genus Oldenlandiopsis, native to parts of the Americas.
Kohautia grandiflora DC.
Kohautia grandiflora DC.
Kohautia grandiflora is an annual ruderal herb in the Rubiaceae family, native to parts of Africa and Western Asia, introduced to the Americas.
Kadua affinis Cham. & Schltdl.
Kadua affinis Cham. & Schltdl.
Kadua affinis (manono/variable starviolet) is a highly variable native Hawaiian flowering plant in the Rubiaceae family.
Scleromitrion diffusum (Willd.) R.J.Wang
Scleromitrion diffusum (Willd.) R.J.Wang
Scleromitrion diffusum is a Rubiaceae flowering herb used in traditional Chinese medicine, native to tropical and subtropical Asia.
Scleromitrion verticillatum (L.) R.J.Wang
Scleromitrion verticillatum (L.) R.J.Wang
Scleromitrion verticillatum is a perennial plant native to South and Southeast Asia, with kaempferitrin isolable from its leaves.
Diacrodon compressus Sprague
Diacrodon compressus Sprague
Diacrodon compressus is the only species in the monotypic Rubiaceae genus Diacrodon, endemic to northeastern Brazil.
Theligonum cynocrambe L.
Theligonum cynocrambe L.
Theligonum cynocrambe is an annual herb with ant-dispersed seeds, whose young shoots are sometimes eaten as a vegetable.
Gardenia taitensis DC.
Gardenia taitensis DC.
Gardenia taitensis, Tahitian gardenia, is a fragrant Rubiaceae shrub and the national flower of French Polynesia and Cook Islands.
Gardenia volkensii K.Schum.
Gardenia volkensii K.Schum.
Gardenia volkensii is a shrub or small tree native to African bushveld, with ecological roles and multiple human uses including medicine.
Gardenia thunbergia Thunb.
Gardenia thunbergia Thunb.
Gardenia thunbergia is a South African flowering tree with fragrant flowers, horticultural uses, and cultural ritual roles.
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