中文摘要：

Buddleja macrostachya (Buddlejaceae ) 是到中国喜玛拉雅的山并且在以外的一个普遍灌木土著人。发生在二个 ploidy 层次， hexaploid， 2n=6x=114 和 dodecaploid 被发现了， 2n=12x=228。为了决定词法人物是否可能被用作 ploidy 的指示物，铺平，我们测量了花并且水果长度，亲戚和绝对的叶缩放，在 B 的不同人口的叶表面，和有气孔的密度和长度上的毛状体密度。macrostachya。一般来说，花和水果长度，绝对的叶尺寸，和有气孔的长度在 ploidy 水平(P【0.01 ) 随增加增加了，而近轴的房间和有气孔的密度在 ploidy 水平(P【0.01 ) 随增加减少了。我们没在不同人口在相对的叶尺寸(P】0.05 ) 发现明显的差别。学习例如 stomata，房间和有气孔的形状的毛状体类型，表皮的膜和装饰的另外的人物，和背斜的墙模式在这种是相当不变的。因此，看来，花和水果长度和长度能被用来在这个领域里或在腊叶集标本把 hexaploid 与 dodecaploid cytotypes 区分开来。

英文摘要：

Buddleja macrostachya （Buddlejaceae） is a widespread shrub native to the Sino-Himalayan mountains and beyond. It has been found to occur at two ploidy levels, hexaploid, 2n=6x=114 and dodecaploid, 2n= 12x=228. To determine if morphological characters might be used as indicators of ploidy levels, we measured floral and fruit length, relative and absolute leaf size, trichome density on both leaf surfaces, and stomatal density and length in different populations orB. macrostachya. In general, flower and fruit length, absolute leaf size, and stomatal length in,eased with an increase at ploidy level （P〈0.01）, whereas adaxial cell and stomatal density decreased with an increase at ploidy level （P〈0.01）. We found no conspicuous differences in relative leaf size （P〉0.05） in different populations. Other characters studied such as trichome type, cuticular membrane and ornamentation of stomata, cell and stomatal shape, and anticlinal wall pattern were quite constant in this species. Thus it appears that flower and fruit length, absolute leaf size, and stomatal frequency and length can be used to distinguish hexaptoid from dodecaploid cytotypes either in the field or in herbarium specimens.