Gregg's CloakfernCarl Rothfels
Notholaena greggii is a species of northern Mexico. It extends barely into the US in the Big Bend area of Texas, where all known populations occur within 25 km of the Mexican border (Windham, 1993a). Morphology strongly suggests that it is most closely related to N. bryopoda; plastid DNA sequence data are equivocal, and place N. greggii in an unresolved position within core Notholaena II (Rothfels et al., 2008). Notholaena greggii prefers limestone ledges or gypsum-rich habitats, but is not as specialized a gypsum species as N. bryopoda.
See the N. bryopoda page for a discussion of the differences between these two species, and for way of distinguishing them from superficially similar species of Argyrochosma.
- Pellaea greggii
- Cheilanthes greggii
- Allosorus greggii
- Chrysochosma greggii
- Notholaena pringlei
- Vernacular Names: Gregg's Cloakfern, Marshmallow Cloakfern
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
Correspondence regarding this page should be directed to Carl Rothfels at
Page copyright © 2008 Carl Rothfels
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- First online 23 December 2008
- Content changed 23 December 2008
Citing this page:
Rothfels, Carl. 2008. Notholaena greggii http://tolweb.org/Notholaena_greggii/133608/2008.12.23 in The Tree of Life Web Project, http://tolweb.org/. Gregg's Cloakfern. Version 23 December 2008 (under construction).