| + | Tall stout perennials with long running rootstocks, strong culms and terminal panicles with the aspect of Arundp: spikelets 3-7-fld. Differs from Arundo chiefly in having glabrous sharp-pointed not bifid lemmas, the long hairs confined to the rachilla-joints, and in that the lowest floret is staminate.—Species 3, 1 in Trop. Asia, 1 in S. Amer. and 1, our species, cosmopolitan. |