【摘 要】
：
Corylus mandshurica Maxim. & Rupr. 和 C. Sieboldiana Blume 在中国和俄罗斯一直被处理为独立的种.本文对来自不同标本室的这两个种的腊叶标本及野外采集的大量叶片进行了
【机 构】
：
汉城国立大学森林资源系暨树木园,中国科学院植物研究所
论文部分内容阅读
Corylus mandshurica Maxim. & Rupr. 和 C. Sieboldiana Blume 在中国和俄罗斯一直被处理为独立的种.本文对来自不同标本室的这两个种的腊叶标本及野外采集的大量叶片进行了形态学分析,以确定形态分化是否足够成为建立种的依据.对采自中国、韩国和日本覆盖两个种分布区的153份标本的18个形态学性状进行了统计,以构建数据矩阵用于主成分分析.结果表明,包含C. Sieboldiana 复合体的数据单位(entities)在所有的形态学性状上均呈现出广泛的重叠区域.叶片和果实性状分析结果表明类群间缺乏分异性.基于形态学性状不足以把 C. Mandshurica 从C. Sieboldiana 中分离出去,并给予种的等级,也就是说这两个类群在形态上没有完全分化,而且它们的分布区也是相连的. 因此,应该把C. Mandshurica作为C. Sieboldiana 的种下分类群处理.C. Sieboldiana在韩国南部和日本的具短总苞的植物常常被处理为独立的种或变种,但实际上应该作为C. Sieboldiana 内的变型处理,因为总苞性状高度变异,即使在同一个体上也是如此.
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