大穗细柄茅PtilagrostismacrospiculaL.B.Cai,sp.nov.Fig.1.Typus:Xizang(西藏),YadongXian(亚东),NearChuntang(春塘),inpratisclivorum,at4200melevation,Sept.14,1974,Qinghai-XizangExped.(青藏队)74-2496(HNWP).HaecspeciesP.concinnae(Hook.f.)Roshev.proxima,aquadiffertligulis2.5～3.5mmlongis,spiculis8.0～12.5mmlongis(aristisexclusis),duabusglumisnonaequalibus,lemmatibus5.5～8.0mmlongis,paleislemmatibusevidenterbrev-ioribus,antheris1.8～2.5mmlongis.Herbaeperennes,radicibusfibrosistenuibus.Culmi…