兰考泡桐一种新的花形态变异类型及其系统学意义

A new type of flowers of Paulownia elongata S. Y. Hu and its systematic significance

本文描述了兰考泡桐(Paulawnia elongata S.Y.Hu)一种新的花形态变异类型:花萼6裂;花冠6裂,檐部2唇形不明显,上、下唇均3裂;将花冠纵剖后可见:雄蕊5枚,在花冠两条纵褶基部着生的2枚雄蕊长,其左侧的1枚和右侧的2枚短。这与兰考泡桐常见的花形态特征(萼齿5,花冠5裂,檐部2唇形明显,上唇2裂、下唇3裂,雄蕊4枚)不同。

This paper reports a new type of flowers of Paulownia elongata S. Y. Hu, which found in Beijing, China. Its calyx and corolla are 6-lobed, and stamens 5. The shape of its corolla is not 2 - lipped distinctly. It is different from the common flower of P. elongata.