''Didymoglossum petersii'', the dwarf bristle fern,
is a species in the family
Hymenophyllaceae,
[ (filmy ferns). It is one of three filmy ferns native to a significant area of the United States. It is found only in the nine most southeastern states, south of the Kentucky/Virginia - Tennessee/North Carolina dividing line, as well as in ]Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
and Guatemala.
The genus ''Didymoglossum
''Didymoglossum'' is a tropical genus of ferns in the family Hymenophyllaceae. It comprises more than 30 epilithic or low- epiphytic species under two subgenera.[Pteridophyte Phylogeny Group
The Pteridophyte Phylogeny Group, or PPG, is an informal international group of systematic botanists who collaborate to establish a consensus on the classification of pteridophytes ( lycophytes and ferns) that reflects knowledge about plant relatio ...]
classification of 2016 (PPG I),[ but not by some other sources. , '' Plants of the World Online'' merged the genus into a broadly defined '' Trichomanes'', treating this species as ''Trichomanes petersii''.][
]
References
Hymenophyllales
{{Polypodiidae-stub