玉树与燕子掌辨析初探

An Initial Discussion on Differentiation and Analysis about Crassula Perforate and Crassula Argentea

玉树和燕子掌非常相似,通过对一株开花“玉树”与典型燕子掌、玉树形态特征、染色体的研究对比,阐明正确区分玉树与燕子掌的方法.分类要以最适条件下培养的正常叶为依据,选择其典型特征如叶的形状、基部是否贯穿等,还需以染色体为依据作辅助判断.

There are some similar aspects between Crassula pedorste and Crassula argentes. Through the compsrison of a blooming Crassula perforatc with a typical Crassuls srgentea in form and chromosome,we find a proper way to differentiate them. The classification is based on the leaves grown in the most suitable conditions,with their specific characteristics such as the shape of the leaves and the linking -up of leaves at the base. Chromosome serves as an assisting determining factor.