Gypsum CloakfernCarl Rothfels
This small fern has highly divided leaves, with small involute ultimate segments, and is more reminiscent of species of Argyrochosma than it is of most species of Notholaena. However, it has the chromosome base number (x=30) of Notholaena, farina on its gametophytes, and is well embedded within core Notholaena II based on plastid DNA sequence data (Rothfels et al., 2008). It is a gypsum specialist, endemic to the Chihuahuan Desert of northern Mexico.
Notholaena bryopoda most closely resembles N. greggii. The two species can be distinguished by their rhizome scales (evenly colored and bright brown in N. bryopoda; black with brown margins in N. greggii) and their leaf-stalk scales (linear in N. bryopoda; lanceolate-ovate in N. greggii).
Giauque, M. F. A. 1949. Wax glands and prothallia. American Fern Journal 39:33-35.
Mickel, J. T., and A. R. Smith. 2004. The Pteridophytes of Mexico. The New York Botanical Garden Press, New York.
NatureServe. 2008. NatureServe Explorer, Arlington, Virginia. www.natureserve.org/explorer/
Rothfels, C. J., M. D. Windham, A. L. Grusz, G. J. Gastony, and K. M. Pryer. 2008. Toward a monophyletic Notholaena (Pteridaceae): Resolving patterns of evolutionary convergence in xeric-adapted ferns Taxon 57:712-724.
Tryon, R. M. 1956. A revision of the American species of Notholaena. Contributions from the Gray Herbarium 179:1-106.
Windham, M. D. 1993a. Notholaena. Pages 143--149 in Flora of North America (Flora of North American Editorial Committee, ed.) Oxford University Press, New York.
Windham, M. D., and G. Yatskievych. 2003. Chromosome studies of cheilanthoid ferns (Pteridaceae: Cheilanthoideae) from the western United States and Mexico. American Journal of Botany 90:1788-1800.
Wollenweber, E. 1984. Exudate flavonoids of Mexican ferns as chemotaxonomic markers. Rev. Latinoamer. Quim. 15:3-11.
Duke University, Durham, North Carolina, USA
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- First online 23 December 2008
- Content changed 23 December 2008
Citing this page:
Rothfels, Carl. 2008. Notholaena bryopoda http://tolweb.org/Notholaena_bryopoda/133602/2008.12.23 in The Tree of Life Web Project, http://tolweb.org/. Gypsum Cloakfern. Version 23 December 2008 (under construction).