A phylogeny of the Triraphideae including Habrochloa and Nematopoa (Poaceae, Chloridoideae)

By

Peterson, Paul M.
Romaschenko, Konstantin
Herrera Arrieta, Yolanda

Type

Article

Date of Publication

2022-4-18

Original Publication

PhytoKeys

Volume

194

Pages

123--133

Subjects

Classification , Habrochloa , molecular phylogenetics , Nematopoa , Neyraudia , Triraphideae , Triraphis

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.194.80967

 

Abstract

To investigate the evolutionary relationships among species of the tribe Triraphideae (including two monotypic genera, Habrochloa and Nematopoa), we generated a phylogeny based on DNA sequences from nuclear ribosomal (ITS) and four plastid markers (rps16-trnK, rps16 intron, rpl32-trnL, and ndhA intron). Habrochloa and Nematopoa form a clade that is sister to Neyraudia and Triraphis. Member of the Triraphideae have paniculate inflorescences, 3-veined, marginally ciliate lemmas, usually with hairy lateral veins, that are apically bifid and awned from between a sinus. A description of the Triraphideae and key to the genera is provided, and the biogeography is discussed, likely originating in Africa.