Sphaerostylis is a genus of plant of the family Euphorbiaceae first described as a genus in 1858.Baillon, Henri Ernest. 1858. Étude générale du groupe des Euphorbiacées 466 The entire genus is endemic to Madagascar.Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.
Species Sphaerostylis perrieri Leandri Sphaerostylis tulasneana Baill.
Formerly included moved to other genera (Megistostigma Tragiella ) Sphaerostylis anomala - Tragiella anomala Sphaerostylis cordata - Megistostigma cordatum Sphaerostylis frieseana - Tragiella frieseana Sphaerostylis glabrata - Megistostigma glabratum Sphaerostylis malaccensis - Megistostigma glabratum Sphaerostylis natalensis - Tragiella natalensis
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