摘 要 ：重新界定了?子属(Cotoneaster)高山组(Sect.Alpigeni Hurusawa)黄杨叶系(Series Buxifolii Klotz)的范围，仅含4种植物，即C. buxifolius Wall. ex Lindl.,C.delavayanus Klotz,C. insolitus Klotz和C. poluninii Klotz。将原作者建立该系时包含的5种，即C. argenteus Klotz; C. brevirameus Rehd.& Wils.; C. hodjingensis Klotz; C. lijiangensis Klotz; C. rockii Klotz，被原作者置另一系的C. marginatus Lindl. ex Schlecht.以及被俞德浚教授等误认为红花?子小叶变种C. rubens var. miniatus Yu，一共7个名称归并为黄杨叶?子(C. buxifolius Lindl.)的同物异名；又把C.buxifolius f. vellaea Franch.和C. astrophores J. Fryer et E.C. Nelson归并为绒毛细叶?子C. poluninii Klotz同一种。经修订后的黄杨叶系在?子属高山组中以普遍直立的习性，叶下表面、萼片和萼筒密被绒毛和常具2个小核等特征组成相对自然的一群。
Abstract:The Series Buxifolii Klotz of Sect. Alpigeni Hurusawa in Cotoneaster Medicus has been redefinited in this paper. It contains 4 species, namely C. buxifolius Wall. ex Lindl., C. delavayanus Klotz, C. insolitus Klotz and C. poluninii Klotz. C. argenteus Klotz, C. brevirameus Rehd. & Wils., C. hodjingensis Klotz, C. lijiangensis Klotz, C. rockii Klotz and C. marginatus Lindl. ex Schlecht, which is put into the Ser. Marginati Klotz, as well as C. rubens var. miniatus Yu are all reduced to the C. buxifolius Wall. ex Lindl. C. buxifolius f. vallea Franch. and C. astropores J. Fryer et E. C. Nelson are indentical with C. poluninii Klotz. Based on generally erect habit, densely tomentose leaf undersurface and calyx, as well as the fruit always with 2 pyrenes, the Series Buxifolii Klotz emend. Zhou & Wu of Sect. Alpigeni Hurusawa is a natural one.