Zhang Zhong-Shuai, Li Ling-Lu, Chen Wen-Li
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.
PLoS One. 2017 Jan 6;12(1):e0166603. doi: 10.1371/journal.pone.0166603. eCollection 2017.
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.
描述并图示了青藏高原特有的一个新物种——紧缩穗披碱草。它与披碱草属的其他物种的区别在于具有紧缩的圆锥花序、具毛柱状体和糙硬毛的单膝曲芒以及外稃均匀被毛。基于外稃表皮形态、细胞学以及基于核ITS序列数据的分子系统发育分析的证据证实了它在披碱草属中的系统位置。