Species novae graminum Novae-Zelandiae III. two diploid species of rytidosperma (Danthonieae: Danthonioideae)

Abstract

Two diploid species of Rytidosperma, R. horrens and R. telmaticum, are described from central South Island, the latter as a segregate from R. pumilum. The preferred habitat of R. telmaticum is the margins of kettle-holes, drainage ponds, and other depressions in glacial deposits as one of the dense turf species there; it occurs more sparingly in seral communities on some montane riverbeds, and in one case on sparsely vegetated schist terrain. Rytidosperma horrens is known from only one locality where it grows on the margins of sloping wet flushes. Both species, and their close associates, occupy relatively fertile sites. © 2005 Taylor & Francis Group, LLC.