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The molecular results support the dissolution of Leptochloa s.l. into the following five genera: Dinebra with 23 species, Diplachne with two species, Disakisperma with three species, Leptochloa s.s. with five species and a new genus, Trigonochloa, with two species.

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Recent revisionary and cladistic studies in Leptochloa P. Beauvois (Snow, 1997a), along with preparation of the grass treatment for Flora Zambesiaca (Cope, in press), support nomenclatural changes for this nearly worldwide grass genus. The changes are necessary given the consistent lack of cladistic support for Diplachne P. Beau¬ vois as a taxon distinct from Leptochloa (Snow, 1997a) and the need to reduce in rank several species (Snow, 1997a(Snow, , 1997b.The synonymy of Leptochloa is extensive and only recently has been assessed from a global perspective (Snow, 1997a). However, since the primary purpose of this article is to make these new names available, complete synonymy will be withheld for a later publication (or see Snow, 1997a). In addition to these changes, descrip¬ tions of two new species are forthcoming (Snow, 1998; Snow & Simon, 1997).

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