新疆禾本科2种中国外来植物新记录

Two New Records in Xinjiang of Poaceae Exotic Plants of China

目的:报道新疆2种禾本科(Poaceae)新记录植物。方法:通过近年来的野外调查、标本采集与形态解剖,查阅相关资料对发现的2种新疆禾本科新记录植物进行鉴定。结果:鉴定结果显示,2种新疆禾本科新记录植物为芒颖大麦草(Hordeum jubatum)和长刺蒺藜草(Cenchrus longispinus),均为新疆外来植物。其中长刺蒺藜草为检疫性杂草,且蒺藜草属(Cenchrus)为新疆新记录属。结论:该发现对新疆禾本科植物区系和物种多样性研究具有重要意义,也为该新记录属种的地理分布研究、入侵杂草的扩散与有效监控提供了重要依据和新资料。凭证标本存放于新疆农业大学植物标本馆(XJA)。

Objective:Two new recorded species of Poaceae in Xinjiang were reported.Methods:Two newly recorded species of Poaceae in Xinjiang were identified through field investigations,specimen collection,and morphological dissection,based on relevant data consulted.Results:The identification results showed that the two species were Hordeum jubatum and Cenchrus longispinus,both of which were exotic plants from Xinjiang.Among them,C.longispinus was a quarantine weed,and Cenchrus was a newly recorded genus in Xinjiang.Conclusion:This discovery was significant for studying the flora and species diversity of the Poaceae family in Xinjiang.It also provided a crucial basis and new data for the geographical distribution of the newly recorded genus and species,as well as the diffusion and effective monitoring of invasive weeds.The voucher specimens were deposited in the Herbarium of Xinjiang Agricultural University(XJA).