Trichomanes intricatum

Weft fern
Scientific classification
Kingdom:Plantae
Division:Pteridophyta
Class:Polypodiopsida/Pteridopsida
(disputed)
Order:Hymenophyllales
Family:Hymenophyllaceae
Genus:Trichomanes
Species: T. intricatum
Binomial name
Trichomanes intricatum
Farrar
Trichomanes intricatum
Closeup of T. intricatum

Trichomanes intricatum is known as the weft fern.[1] This is an unusual filmy fern that grows in rock shelters and crevices in the eastern United States, being known only from its gametophyte generation. It is a rare plant that is protected in several states.[2]

Recent study has found a relationship between this species and an Asian filmy-fern species, Crepidomanes schmidtianum. Both share the same chloroplast genome. The relationship is uncertain.[3]

In 2011, Atsushi Ebihara and Alan S. Weakley transferred Trichomanes intricatum to Crepidomanes intricatum based on the chloroplast molecular sequence data.[4]

References

  1. ↑ "Trichomanes intricatum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 14 December 2015.
  2. ↑ Farrar, Donald R. (1992). "Trichomanes intricatum: The Independent Trichomanes Gametophyte in the Eastern United States." American Fern Journal, 82(2): 68-74.
  3. ↑ Ebihara, Atsushi, Donald R. Farrar, and Motomi Ito (2008). "The sporophyte-less filmy fern of eastern North America Trichomanes intricatum (Hymenophyllaceae) has the chloroplast genome of an Asian species." American Journal of Botany, 95: 1645-1651.
  4. ↑ Weakley et al. (2011). "Nomenclatural changes in the flora of the southeastern United States". Journal of the Botanical Research Institute of Texas 5(2): 443.
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