莲山黄耆及其近缘种长管萼黄耆微形态特征比较研究  

Taxonomical Status of Astragalus leansanicus and A.limprichtii Based on Their Micro-morphology

作　　者：刘小林[1] 常朝阳[1] 徐朗然[1] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨陵712100

出　　处：《西北植物学报》2008年第2期272-277,共6页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金项目(30270106)

摘　　要：对莲山黄耆(A.leansanicusUlbr.)和长管萼黄耆(A.li mprichtiiUlbr.)的形态及微观形态特征进行了对比研究,认为两者的萼筒皆为较明显的管状,荚果皆为线形,支持将二者归为同一组,即将长管萼黄耆从原先的旱生组(Sect.Crasinna(Stev.)Bunge)移至鸟爪组(Sect.Crasinna(Stev.)Bunge)。但是莲山黄耆叶的上表皮无毛,荚果明显较短,两者在丁字毛臂长比和气孔分布方面也有明显差异,再结合其地理分布的差别,认为两者应为独立的种。A comparable study on macro-and micro-morphology of Astragalus leansanicus and A.limprichtii was carried out.The similar morphology of tubular calyxes tube and linear pods in both species indicates the two should be attributed to the same section,supporting a transition of A.limprichtii from Sect.Crasinna（Stev.） Bunge into Sect.Crasinna（Stev.） Bunge.However,the glabrous upper leaf epidermis and obviously shorter pods in A.leansanicus,as well as the differences of hair arm ratio and stomatal distribution pattern between the two species,combined with their adjacent but not overlapped distribution areas,also support that they are independent and good species.

关 键 词：莲山黄耆 长管萼黄耆 微观形态 分类 

分 类 号：Q944.5[生物学—植物学]