Polypodium calirhiza

Polypodium calirhiza is a species of fern in the polypody family. Its common names include nested polypody and habit polypody. It is found in California and Oregon in the U.S., and several states of Mexico: Colima, Jalisco, Mexico State, Oaxaca, and Veracruz.[1] The leaflets on each leaf are broad and oval-shaped, coming to a dull point.[2] This fern is sometimes epiphytic.

Polypodium calirhiza

Apparently Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Polypodiales
Suborder: Polypodiineae
Family: Polypodiaceae
Genus: Polypodium
Species:
P. calirhiza
Binomial name
Polypodium calirhiza
S.A.Whitmore & A.R.Sm.

The name of this species is a conflation of Polypodium californicum and Polypodium glycyrrhiza, because this species arose as a hybrid between those two species. It was not recognized as a separate species until 1991.[3]

In the California Coast Ranges P. calirhiza occurs in a number of habitats including California oak woodlands and exposed rocky outcrops. In such oak woodlands it is often found in understory alliances with such species as the fern Pellaea andromedifolia and the fungus Tremella mesenterica.[4]

References
  1. "Polypodium calirhiza". Catalogue of Life. Retrieved 23 June 2017.
  2. "Polypodium calirhiza in Jepson Flora Project". 2012.
  3. Whitmore, S. A. and A. R. Smith. (1991). Recognition of the tetraploid, Polypodium calirhiza (Polypodiaceae), in western North America. Madroño 38:233–248.
  4. C. Michael Hogan. 2008. Witch's Butter: Tremella mesenterica, GlobalTwitcher.com, ed. N. Stromberg Archived 2012-09-21 at the Wayback Machine
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