Maxon CloakfernCarl Rothfels
Notholaena neglecta, a species of limestone rocks and cliffs, enters the United States in extreme southeastern Arizona (S1) and the Big Bend area of Texas (S2; NatureServe, 2008); it is otherwise limited to northcentral Mexico (overall, G4; NatureServe, 2008). In the United States, this species is an apogamous triploid (the sporophytes have three complete sets of chromosomes rather than the typical two sets, and produce unreduced spores, which develop into triploid gametophytes, which then produce a new sporophyte directly from their vegetative tissue, without sexual reproduction) but at least some populations in Mexico are sexual diploids (Windham, 1993a).
This species protrudes its small pentagonal leaves from rock crevices in a manner most reminiscent of N. californica. Mickel and Smith (2004) note that N. neglecta also resembles small individuals of N. candida, but has more divided pentagonal leaves and yellow farina.
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 neglecta http://tolweb.org/Notholaena_neglecta/133613/2008.12.23 in The Tree of Life Web Project, http://tolweb.org/. Maxon Cloakfern. Version 23 December 2008 (under construction).