Plenasium angustifolium

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.^[1][3]

Plenasium angustifolium
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Osmundales
Family:	Osmundaceae
Genus:	Plenasium
Species:	P. angustifolium
Binomial name
Plenasium angustifolium (Ching) A.E.Bobrov[1]
Synonyms[1]
Osmunda angustifolia Ching Osmunda collina Sledge Osmunda zeylanica Kunze Plenasium zeylanicum (Kunze) A.E.Bobrov