Morphological and Anatomical variation in Sporophylls of Isoetes sinensis Palmer (Isoetaceae), An Endangered Quillwort in China.

The article presents an in-depth discussion of the morphological and anatomical variation in sporophylls across and within three populations of Isoetes sinensis in China. Isoetes sinensis is an aquatic fern confined to clear waters. This wild plant is considered rare and endangered as it decreased in numbers and even disappeared from several locations in China.