Leptonychia is a genus of flowering plants belonging to the family Malvaceae.

Its native range is Tropical Africa (Sierra Leone to Kenya, Malawi, and Angola), Indo-China (Myanmar, Thailand, and Vietnam), western and central Malesia (Peninsular Malaysia, Sumatra, Borneo, and Philippines), and New Guinea.

Species 38 species are currently accepted:

Leptonychia adolfi-friederici Leptonychia bampsii Leptonychia banahaensis Leptonychia batangensis Leptonychia brieyi Leptonychia caudata Leptonychia chrysocarpa Leptonychia densivenia Leptonychia devillei Leptonychia dewildei Leptonychia echinocarpa Leptonychia kamerunensis Leptonychia lanceolata Leptonychia lasiogyne Leptonychia ledermannii Leptonychia lokundjensis Leptonychia longicuspidata Leptonychia macrantha Leptonychia mayumbensis Leptonychia melanocarpa Leptonychia mildbraedii Leptonychia molundensis Leptonychia moyesiae Leptonychia multiflora Leptonychia occidentalis Leptonychia pallida Leptonychia pallidiflora Leptonychia parviflora Leptonychia pubescens Leptonychia semlikensis Leptonychia subtomentosa Leptonychia tenuipes Leptonychia tessmannii Leptonychia tokana Leptonychia urophylla Leptonychia usambarensis Leptonychia wagemansii Leptonychia youngii

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