作 者 ：Lu Ying-Qing
期 刊 ：植物分类学报 1991年 4期
Keywords:Impatiens, Pollen morphology,
Abstract:
Two forms of pollen morphology of Impatiens L. (Balsminaceae) have been des-
cribed before: 3-colpate and 4-colpate pollen grains. Pollen grains of 13 species of Impatiens
on Mt. Omei were examined under SEM for the first time and both forms were observed
here, which imply the diversity of species in this region. Of the two forms, 3-colpate one is
quite similar to that of the genus Hydrocera Blume (Balsaminaceae) in external morphology.
This relation also exists between the 3-colpate pollen group and Hydrocera in habit, habitat,
and distribution, etc. It is supposed that the group with 3-colpate pollen type is a natural
one, and may have a close relationship with Hydrocera. The pollen morphology is of impor-
tant significance in classification of the taxa and evaluation of systematic position in the fami-
ly balsaminaceae.