【摘要】 报道了青海赖草属植物一新种:圆稃赖草(Leymus oblongolenmatusL.Zhi et L.B.Cai)。该种的主要特征如下:多年生草本,杆直立、光滑、疏丛,高60~90 cm。叶鞘粗糙,边缘膜质,长于或短于节间,叶舌膜质;叶片边缘内卷。穗状花序直立、密集、黄绿色,长10~15 cm,宽5~15 mm,穗轴粗糙,小穗常3~4枚生于每节,含3~6小花;颖披针形,长4~7 mm,具3~5脉,边缘膜质;外稃长圆状披针形,不明显3脉,背部疏生短柔毛;花药黄色,长4~5 mm。该种与L.paboahus相似。更多还原

【Abstract】 A new species of Leymus in Qinghai,China is reported,and it’s called L.oblongolenmatus L.Zhi et L.B.Cai.The main characters are described as follows: Perennial herbs.Stems are erect and glabrous,few and scattered,60^{90 cm}.tall.tough leaf-sheath,membranaceous on margins,longer or shorter than internodes,membranaceous ligules;Leaf blades involute on margins.Spikes are erect,conferted and flavo-green,10^{15 cm}.long,5^{15 mm}.wide.tough rachis,each node of rachis are with 3⁴ spikelets,with 3⁶ florets.Glumes lanceolate,4⁷ mm long and three to five-nerved,membranaceous on margins.Lemmas prolate spheroidal and lanceolate,obscurely threenerved,with sparse short-pilose on the back.Anther flavescent,4⁵ mm.long.This species is similar to L.paboahus.更多还原