Plenasium angustifolium is a fern in the family Osmundaceae.

[1] The genus Plenasium is recognized in the Pteridophyte Phylogeny Group classification of 2016 (PPG I);[2] however, some sources place all Plenasium species in a more broadly defined Osmunda, treating this species as Osmunda angustifolia.

[3] It is native to eastern Thailand, Laos and southern China (Hainan, Guangdong, Hong Kong, Hunan), and has been introduced into India and Sri Lanka.

This Polypodiidae-related article is a stub.

You can help Wikipedia by expanding it.