A Taxonomic Revision of Styppeiochloa (Arundinoideae: Poaceae) in Madagascar

Jordan K. Teisher; Maria S. Vorontsova; Marina Rabarimanarivo; Stefan Porembski; Peter B. Phillipson

doi:10.3417/2022758

Jordan K. Teisher Missouri Botanical Garden
Maria S. Vorontsova Royal Botanic Gardens, Kew
Marina Rabarimanarivo Missouri Botanical Garden
Stefan Porembski Universität Rostock
Peter B. Phillipson Missouri Botanical Garden

DOI: https://doi.org/10.3417/2022758

Keywords: Africa, Arundinoideae, diversification, grasses, new species, Poaceae, Styppeiochloa, taxonomy

Abstract

The grass genus Styppeiochloa De Winter (Arundinoideae: Poaceae) as it occurs in Madagascar is reviewed, two new species are described, and two subspecific taxa are elevated to species status. These new species, as well as the additional collections made since the latest treatment of the genus for Madagascar in 1954, greatly expand the documented geographic and ecological range of Styppeiochloa as a whole and demonstrate that a substantial diversification of the genus has occurred in Madagascar.