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Notholaena nealleyi Seaton ex J.M. Coult. 1890

Nealley's Cloakfern

Carl Rothfels
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Containing group: core Notholaena

Introduction

This species is close to Notholaena schaffneri and is usually treated as a variety of that species (e.g., Mickel and Smith, 2004; Tryon, 1956). Windham (1993a), however, suggests that Notholaena nealleyi is most likely a sexual allotetraploid (a species that has one complete chromosome set from each of two different species), with N. schaffneri as one of its parents and the other parent unknown. The two taxa—N. nealleyi and N. schaffneri—are largely geographically isolated. The former is limited to southern Texas and the adjacent northern Mexican state of Coahuila, while the latter ranges across most of central Mexico. Notholaena nealleyi prefers to grow on calcareous rocks, usually limestone.

Characteristics

Notholaena nealleyi differs from most of the other lanceolate-leaved white-farinose core Notholaena species in its indument of shiny dark needlelike hairs (rather than, say, brown scales). From Notholaena schaffneri it differs in some characteristics of the rhizome scales, and in the number of free pinnule-pairs on the middle pinnae: 1 – 3 in N. nealleyi vs. 4 – 6 in N. schaffneri (Tryon, 1956; Windham, 1993a).

Other Names for Notholaena nealleyi Seaton ex J.M. Coult. 1890

References

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.

Title Illustrations
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Scientific Name Notholaena nealleyi
Location USA, Texas
Specimen Condition Live Specimen
Identified By Michael Windham
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2008 Carl Rothfels
About This Page

Carl Rothfels
Duke University, Durham, North Carolina, USA

Correspondence regarding this page should be directed to Carl Rothfels at

Page: Tree of Life Notholaena nealleyi Seaton ex J.M. Coult. 1890. Nealley's Cloakfern. Authored by Carl Rothfels. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Rothfels, Carl. 2008. Notholaena nealleyi Seaton ex J.M. Coult. 1890. Nealley's Cloakfern. Version 23 December 2008 (under construction). http://tolweb.org/Notholaena_nealleyi/133595/2008.12.23 in The Tree of Life Web Project, http://tolweb.org/

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