Phylogeny and classification of Leptochloa

Phylogeny and classification of <i>Leptochloa</i>

Phylogeny and clas­si­fic­a­tion of Leptochloa

In order to test the evol­u­tion­ary rela­tion­ships among spe­cies of Leptochloa (spangletop grasses), Peterson et al. con­duct a molecu­lar phylo­gen­etic ana­lysis using six DNA mark­ers of 130 warm-season grasses (sub­fam­ily Chloridoideae). Twenty-two spe­cies of Leptochloa are found in five sep­ar­ate lin­eages that do not share a single com­mon ancestor. The molecu­lar res­ults sup­port the dis­sol­u­tion of Leptochloa sensu lato into the fol­low­ing five gen­era: Dinebra with 23 spe­cies, Diplachne with two spe­cies, Disakisperma with three spe­cies, Leptochloa sensu stricto with five spe­cies, and a new genus described for the first time, Trigonochloa, with two spe­cies. A key based on mor­pho­lo­gical char­ac­ter­ist­ics is provided to sep­ar­ate the five genera.

Annals of Botany Office.

The Annals of Botany Office is based at the University of Leicester.