The genus Tristachya (Poaceae: Panicoideae) in Madagascar.

Abstract

• We present a revision of the three species of in Madagascar. The tussock-forming is a rare endemic of the quartz outcrops in the Itremo Protected Area. The rhizomatous and are common components of the sandstone outcrop vegetation in the Isalo National Park. A new combination is made. Descriptions, conservation assessments, illustrations, and a distribution map are presented.