Thelypteris pilosa
Encyclopedia
Thelypteris pilosa is a species of fern
known by the common names hairy maiden fern, softhairy maiden fern, and streak-sorus fern. It is native to Mexico and Central America, with one variety occurring in the United States. The fern has a disjunct distribution
, with var. alabamensis known from Winston County, Alabama
, 2000 kilometres (1,242.7 mi) from any other populations of this species. This variety is now treated by some authors as a species in its own right, Thelypteris burksiorum. 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.
Fern
A fern is any one of a group of about 12,000 species of plants belonging to the botanical group known as Pteridophyta. Unlike mosses, they have xylem and phloem . They have stems, leaves, and roots like other vascular plants...
known by the common names hairy maiden fern, softhairy maiden fern, and streak-sorus fern. It is native to Mexico and Central America, with one variety occurring in the United States. The fern has a disjunct distribution
Disjunct distribution
In biology, a taxon with a disjunct distribution is one that has two or more groups that are related but widely separated from each other geographically...
, with var. alabamensis known from Winston County, Alabama
Winston County, Alabama
Winston County is a county of the U.S. state of Alabama, formerly known as Hancock County before 1858.Its name is in honor of John A. Winston, the 15th Governor of Alabama. As of 2010, the population was 24,484. Its county seat is Double Springs....
, 2000 kilometres (1,242.7 mi) from any other populations of this species. This variety is now treated by some authors as a species in its own right, Thelypteris burksiorum. 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.