PJB-2017-742
MEGASPORE MORPHOLOGY OF CHINESE SELAGINELLACEAE AND ITS TAXONOMIC SIGNIFICANCE
YANSHUANG LIU
Abstract
The study examined the megaspore morphology of 15 species of the genus Selaginella P. Beauv. (Selaginellaceae Willk.) using scanning electron microscopy. Of the 15 species, Selaginella arbuscula and S. drepanophylla are reported for the first time. Their megaspore surface ornamentations could be classified into five major types: granulate, tuberculate, verrucate, verrucate-rugulate and reticulate. The morphological characteristics of their megaspores can be used for subgenus classification. Compared with previous studies, we believe that the subgeneric relationships of the genus Selaginella need to be further studied.
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