东北产桔梗科（Campanulaceae）植物髓维管束的变异及其分类学意义

VARIATION OF THE MEDULLANY BUNDLE OF CHINA OF THE CAMPANULACEAE OF THE NORTHEAST AND ITS TAXANOMIC SIGNIFICANCE

东北产桔梗科含髓维管束的植物共２属６种。本文研究了２属３种植物的髓维管束的类型、变异及其分类学意义。

There are 6 spedes in 2 genera (campanula L. Adeaophora Fials) of the campanulaoneof tLhe Northest of etna, which have medullary bULndies in the stas. This paper deals withtype and variation of the medullary bundle and its taxanondc siedcance.