Log In New Account Sitemap
  • Home
  • Search
    • Search Collections
    • Map Search
    • Dynamic Species List
    • Exsiccati
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Search Images
  • Species Checklists
    • North America
  • Crowdsource
  • Contacts
    • Partners
  • Acknowledgements
Astrolepis cochisensis  
Family: Pteridaceae
Astrolepis cochisensis image
Max Licher
  • FNA
  • Resources
Dale M. Benham
Michael D. Windham in Flora of North America (vol. 2)
Stems compact; stem scales uniformly tan or somewhat darker near base, to 10 mm, margins ciliate-dentate to entire. Leaves 7--40 cm. Blade 1-pinnate to pinnate-pinnatifid, pinna pairs 20--50. Pinnae oblong, largest usually 4--7 mm, entire or asymmetrically lobed, lobes 1--4, broadly rounded, separated by shallow sinuses; abaxial scales completely concealing surface, ovate, usually 0.5--1 mm, ciliate with coarse marginal projections; adaxial scales sparse, deciduous, stellate to coarsely ciliate, mostly circular to elliptic, peltate, body more than 5 cells wide. Sporangia containing 32 or 64 spores. Astrolepis cochisensis is reported to be toxic to sheep (F. P. Mathews 1945). Three cytotypes that occupy different ranges and/or habitats have been identified and are treated here as subspecies. These include a sexual diploid (subsp. chihuahuensis ) found on calcareous substrates in the Chihuahuan Desert; an apogamous triploid (subsp. cochisensis ), which inhabits primarily calcareous substrates in the Sonoran, Mojavean, and western Chihuahuan deserts; and an apogamous tetraploid (subsp. arizonica ), which occupies primarily noncalcareous substrates in southern Arizona. Isozyme analyses suggest that subsp. cochisensis is an autotriploid derivative of the diploid subsp. chihuahuensis (D. M. Benham 1989). Both the isozymes and substrate preferences of subsp. arizonica indicate, however, that it is not a simple autotetraploid and that other taxa remain to be discovered within the Astrolepis cochisensis complex.

Astrolepis cochisensis
Open Interactive Map
Astrolepis cochisensis image
Max Licher
Astrolepis cochisensis image
Frankie Coburn
Astrolepis cochisensis image
Frankie Coburn
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Patrick Alexander
Astrolepis cochisensis image
Anthony Mendoza
Astrolepis cochisensis image
Anthony Mendoza
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Astrolepis cochisensis image
Click to Display
100 Initial Images
- - - - -
View All Images

The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.