Scleromitrion is a genus of flowering plants in the family Rubiaceae, native to tropical and subtropical Asia and the western Pacific. The genus was first established in 1834 as a section of the genus Hedyotis, H. sect. Scleromitrion, and was raised to a full genus in 1838.
Species , Plants of the World Online accepted the following species: Scleromitrion angustifolium (Cham. & Schltdl.) Benth. Scleromitrion brachypodum (DC.) T.C.Hsu Scleromitrion capitatum Miq. Scleromitrion delicatum (Halford) K.L.Gibbons Scleromitrion diffusum (Willd.) R.J.Wang Scleromitrion galioides (F.Muell.) K.L.Gibbons Scleromitrion gibsonii (Halford) K.L.Gibbons Scleromitrion gracilipes (Craib) Neupane & N.Wikstr. Scleromitrion intonsum (Halford) K.L.Gibbons Scleromitrion kerrii (Craib) Wangwasit & Chantar. Scleromitrion koanum (R.J.Wang) R.J.Wang Scleromitrion laceyi (Halford) K.L.Gibbons Scleromitrion largiflorens (Halford) K.L.Gibbons Scleromitrion leptocaule (Halford) K.L.Gibbons Scleromitrion linoides (Griff.) Neupane & N.Wikstr. Scleromitrion pauciflorum (Bartl. ex DC.) Miq. Scleromitrion pinifolium (Wall. ex G.Don) R.J.Wang Scleromitrion polycladum (F.Muell.) K.L.Gibbons Scleromitrion scleranthoides (F.Muell.) K.L.Gibbons Scleromitrion sirayanum T.C.Hsu & Z.H.Chen Scleromitrion subulatum (Korth.) K.L.Gibbons Scleromitrion tenelliflorum (Blume) Korth. Scleromitrion tenuifolium (Burm.f.) K.L.Gibbons Scleromitrion thysanotum (Halford) K.L.Gibbons Scleromitrion verticillatum (L.) R.J.Wang
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