Lasiorhachis is a genus of flowering plant in the family Poaceae, native to Madagascar. The taxon was first described as a subdivision of Andropogon by Eduard Hackel in 1889 and raised to a genus by Otto Stapf in 1927.
Species , Plants of the World Online accepted the following species: Lasiorhachis hildebrandtii (Hack.) Stapf Lasiorhachis perrieri (A.Camus) Bosser Lasiorhachis viguieri (A.Camus) Bosser
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