Thelypteris pilosa

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Thelypteris pilosa
Thelypteris pilosa alabamensis lg.jpg
var. alabamensis

Apparently Secure (NatureServe)
Scientific classification
Kingdom: Plantae
Division: Polypodiophyta
Class: Polypodiopsida
Order: Blechnales
Family: Thelypteridaceae
Genus: Thelypteris
Species: T. pilosa
Binomial name
Thelypteris pilosa
(M. Martens & Galeotti) Crawford

Thelypteris pilosa is a complex of species of fern known by the common names hairy maiden fern,[1] softhairy maiden fern,[2] and streak-sorus fern.[3] Two loosely circumscribed varieties are native to Mexico and Central America (var. pilosa and var. major), and one species Thelypteris burksiorum Watkins and Farrar occurring in the United States. The fern has a disjunct distribution, with Thelypteris burksiorum Watkins and Farrar known from Winston County, Alabama, 2,000 kilometres (1,200 mi) from any other populations of this species.[3] This plant is federally listed as a threatened species of the United States. There are two other varieties limited to Mexico and Central America, var. major and var. pilosa.[4]


  1. ^ Thelypteris pilosa. The Nature Conservancy.
  2. ^ Thelypteris pilosa. USDA Plants Profile.
  3. ^ a b Thelypteris pilosa. Flora of North America.
  4. ^ Watkins, J. E. and D. R. Farrar. (2002). A New Name for an Old Fern from North Alabama. American Fern Journal 92(2) 171-78.