摘 要 ：Species P. vaginato Sw. affinis, sed culmis caespitosis erectis vel ascendentibus, lematibus inferoribus sparsim villosis deffert.Caespitose perennial. Culms 20-40 cm, erect or ascending. Sheaths glabrous, ligule about 0.5 mm; blades 3-10 cm long, 3-6 mm wide, glabrous. Inflorescence of 2-3 racemes arranged digitately,raceme 3-6 cm, glabrous, with narrowly singed rhachis. Spikelets 2-2.3 mm, solitary, seesile, in 2-rows, ovate-elliptical, yellowish-green, plano-convex; lower glume absent; upper glume as long as the spikelet, glabrous or sparely villous; lower lemma similar but sparely villous, the mid-vein obscure.……
Abstract:Species P. vaginato Sw. affinis, sed culmis caespitosis erectis vel ascendentibus, lematibus inferoribus sparsim villosis deffert.Caespitose perennial. Culms 20-40 cm, erect or ascending. Sheaths glabrous, ligule about 0.5 mm; blades 3-10 cm long, 3-6 mm wide, glabrous. Inflorescence of 2-3 racemes arranged digitately,raceme 3-6 cm, glabrous, with narrowly singed rhachis. Spikelets 2-2.3 mm, solitary, seesile, in 2-rows, ovate-elliptical, yellowish-green, plano-convex; lower glume absent; upper glume as long as the spikelet, glabrous or sparely villous; lower lemma similar but sparely villous, the mid-vein obscure.……