Thelypteris inabonensis
| Thelypteris inabonensis | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Blechnales |
| Family: | Thelypteridaceae |
| Genus: | Thelypteris |
| Species: | T. inabonensis |
| Binomial name | |
| Thelypteris inabonensis Proctor | |
Thelypteris inabonensis is a rare species of fern known by the common name cordillera maiden fern.[1] It is endemic to Puerto Rico, where it is known from only two localities: at the headwaters of Río Inabón and at the Toro Negro State Forest.[2] It is a federally listed endangered species of the United States.
This fern was first described in 1985.[3] It was placed on the endangered species list in 1993.[4] At that time it was known to exist at two locations in the mountain forests of Puerto Rico, one near the Río Inabón in the Toro Negro Commonwealth Forest and one on Cerro Rosa in Ciales (Cerro Rosa is also located in the Toro Negro State Forest[5]). In total there were about 46 individual plants counted.[4]
This terrestrial fern has fronds up to 60 centimeters long divided into 25 or 30 pairs of lightly hairy segments. The sori are arranged around the veins on the undersides. They are covered with hairy indusia.[4]
References
- ↑ Thelypteris inabonensis. USDA Plants Profile.
- ↑ Caribbean Endangered Species Map. U.S. Fish and Wildlife Service. Page "Ponce (2-2)." Retrieved 18 August 2013.
- ↑ Proctor, G. R. (1985). New species of Thelypteris from Puerto Rico. American Fern Journal 75(2) 56-70.
- 1 2 3 USFWS. Determination of endangered status for three endemic Puerto Rican ferns. Federal Register July 2, 1993.
- ↑ Los Bosque de Puerto Rico. PR Department of Natural and Environmental Resources. Hojas de Nuestro Ambiente. Publication P-010. November 2006. Retrieved 18 August 2013.