A new species of Neurachne (Poaceae) from Western Australia

Neurachne annularis T.Macfarlane is described and illustrated with photographs and a distribution map. The new species forms Triodia-like hummocks and grows on and around banded ironstone ranges in the Yilgarn region of Western Australia where it is often dominant in the understorey. The species has the C3 photosynthetic pathway and is diploid with n = 9, one of three species with that combination in a genus now of seven species. It is morphologically closest to N. tenuifolia S.T.Blake, from ranges in Central Australia.