• NSF NEON | Open Data to Understand our Ecosystems
  • Biorepository Data Portal

  • Home
  • Search
    • Sample search
    • Map search
    • Dynamic Species List
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Image Search
  • Datasets
    • Research Datasets and Special Collections
    • Checklist: Research Sites - Invertebrates
    • Checklist: Research Sites - Plants
    • Checklist: Research Sites - Vertebrates
  • Sample Use
    • Sample Use Policy
    • Sample Request
    • Sample Archival Request
    • Data Usage Policy
  • Additional Information
    • Tutorials and Help
    • Biorepository Staff
    • About NEON
    • NEON Data Portal
    • ASU Biocollections
    • About Symbiota
  • Getting Started
Login New Account Sitemap
Argyrochosma dealbata (Pursh) Windham  

No occurrences found

Family: Pteridaceae
powdery false cloak fern
[Cheilanthes dealbata D. Don, moreNotholaena dealbata (Pursh) Kunze, Pellaea dealbata (Pursh) Prantl]
Argyrochosma dealbata image
Patrick Alexander
  • FNA
  • Gleason & Cronquist
  • Resources
Michael D. Windham in Flora of North America (vol. 2)
Stem scales brown. Leaves 3--15 cm. Petiole chestnut brown, 0.50--0.75 mm diam. Blade deltate, 3--5-pinnate proximally, somewhat herbaceous, abaxially covered by whitish farina, adaxially glabrous or sparsely glandular; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles. Ultimate segments not articulate, dark color of stalks continuing into segment bases abaxially; segment margins recurved, often partially concealing sporangia; veins often visible adaxially. Sporangia submarginal, borne on distal 1/3 of secondary veins, containing 64 spores. 2 n = 54. Sporulating summer--fall. Calcareous cliffs and ledges; 100--600 m; Ark., Ill., Kans., Ky., Mo., Nebr., Okla., Tex. The distinctions between Argyrochosma dealbata and A . limitanea are subtle but apparently absolute. Although both occur in Texas, their ranges do not overlap. Despite the morphologic similarities, isozyme analyses indicate that A . dealbata , a diploid species, was not involved in the origin of polyploid A . limitanea .

Vascular plants of NE US and adjacent Canada
Rhizome-scales brown, concolorous, 2-5 mm; lvs tufted, evergreen, 7-15 cm, the slender petiole 3-9 cm, reddish-brown, glabrous; blades monomorphic, deltoid pentagonal, tripinnate or tripinnate-pinnatifid, to 5 נ4 cm, the rachis glabrous; pinnae opposite, petiolulate, deltoid-ovate, ca 4 pairs, the lowest the largest, the upper smaller and simple, sessile or adnate; ultimate segments spatulate (terminal flabellate), sessile, 2-3.5 mm, cuneate at base, often crenate at the apex, pruinose above, copiously white-powdery beneath, the margin only slightly recurved and scarcely modified; sporangia large, mostly solitary; 2n=54. Calcareous cliffs; Mo. and Nebr. to Okla. and c. Tex. (Cheilanthes d.; Pellaea d.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Argyrochosma dealbata
Open Interactive Map
Argyrochosma dealbata image
Patrick Alexander
Argyrochosma dealbata image
Patrick Alexander
Click to Display
3 Total Images
NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.