Under Construction

Notholaena greggii (Mett. ex Kuhn) Maxon 1916

Gregg's Cloakfern

Carl Rothfels
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Containing group: core Notholaena

Introduction

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.

Characteristics

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.

Other Names for Notholaena greggii (Mett. ex Kuhn) Maxon 1916

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
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Scientific Name Notholaena greggii
Location USA, Texas, Closed Canyon in Big Bend Ranch State Park
Acknowledgements Reproduced with permission from Patrick Alexander's site: polyploid.net
Specimen Condition Live Specimen
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2004
Scientific Name Notholaena greggii
Location USA, Texas, Closed Canyon in Big Bend Ranch State Park
Acknowledgements Reproduced with permission from Patrick Alexander's site polyploid.net
Specimen Condition Live Specimen
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2004
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 greggii (Mett. ex Kuhn) Maxon 1916. Gregg'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 greggii (Mett. ex Kuhn) Maxon 1916. Gregg's Cloakfern. Version 23 December 2008 (under construction). http://tolweb.org/Notholaena_greggii/133608/2008.12.23 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

This page is a Tree of Life Leaf Page.

Each ToL leaf page provides a synopsis of the characteristics of a group of organisms representing a leaf at the tip of the Tree of Life. The major distinction between a leaf and a branch of the Tree of Life is that a leaf cannot generally be further subdivided into subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box

Notholaena greggii

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top