作 者 ：Ding Bing-Yang, Fang Yun-Yi, Zhang Hui-Ming, Liang Hong, Zhao Lie
期 刊 ：植物分类学报 1991年 2期
关键词：花粉形态菱属浙江；
Keywords:Pollen morphology, Trapa, Zhejiang, China,
Abstract:
In the present work, pollen grains of 9 species of Trapa L. from Zhejiang were ex-
amined under LM and SEM. They are subsphaeroidal or subprolate, obtuse-triangular in
polar view, elliptic or subrounded in equatorial view, and 3-colpate. In the equatorial area,
there are three ridge-shaped appendages which elongates along apertures toward two poles
and ultimately combined, the ornamentation of other part of exine is minute-verrucate. The
genus Trapa is uniform in shape of pollen grains, type and position of apertures and
ornamentation of exine, while differentiation can be found in size of pollen grains and shape
of ridge-shaped appendage. All of these provide valuable evidence for the classification of
Trapa and the verification of their affinities. The validity of Trapaceae, the evolutionary
trends of pollen morphology and the affinities of some species are discussed in this paper.