title: Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau.
abstract: A new species, Ptilagrostis contracta, endemic to Qinghai-Tibet Plateau is described and illustrated. It is distinguished from other species in Ptilagrostis by having contracted panicles, 1-geniculate awns with hairy columns and scabrous bristles and evenly pubescent lemmas. Evidence from lemma epidermal pattern, cytology and molecular phylogenetic analyses based on the nuclear ITS sequence data confirm its systematic position in Ptilagrostis.
authors.affiliation: State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.|University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Zhong-Shuai
authors.initials: ZS
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.|University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Ling-Lu
authors.initials: LL
authors.lastname: Li
authors.affiliation: State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.
authors.forename: Wen-Li
authors.identifier: 0000-0002-1080-2627
authors.initials: WL
authors.lastname: Chen
mesh_terms: D002681:China; D032461:Chromosomes, Plant; D058893:DNA Barcoding, Taxonomic; D018744:DNA, Plant; D017753:Ecosystem; D004777:Environment; D019143:Evolution, Molecular; D058865:Introduced Species; D010802:Phylogeny; D006109:Poaceae / Q000145:classification* / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D018744:DNA, Plant