Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

PTERIDACEAE BRAKE FAMILY

Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux, except as noted

Perennial herb, in soil or on or among rocks; rhizome creeping to erect, scaly. Leaf: generally all ± alike (or of 2 kinds, fertile, sterile), generally < 50 cm, often < 25 cm; stipe generally thin, wiry, often dark, ×-section with vascular strands generally 1–3, less often many in circle; blade generally pinnate or ± palmate-pinnate (see Adiantum), often >= 2-compound, abaxially often with glands, ± powdery exudate, hairs, or scales; segments round, oblong, fan-shaped, or other, veins generally free. Sporangia: in sori or not, marginal, submarginal, or along veins, covered by recurved, often modified segment margins (false indusia) or not; true indusia 0; spores spheric, sides flat or not, scar with 3 radiating branches.
± 40 genera, 500 species: worldwide, especially dry areas. [Windham 1993 FNANM 2:122–186] Definition of Cheilanthes, related genera problematic; traditional limits often untenable. —Scientific Editors: Alan R. Smith, Thomas J. Rosatti.

Key to Pteridaceae

ARGYROCHOSMA
Plant in soil or rock crevices; rhizome short-creeping, scales lance-linear, tan to ± red. Leaf: < 40 cm; hairs 0; scales 0; stipe cylindric, dark, glabrous or ± scaly at base; blade 2–5-pinnate, segments stalked, generally < 5 mm, round to oblong, blue- to gray-green, generally thick, veins obscure; axes, blades covered with ± white exudate abaxially or not. Sporangia: along veins for outer 1/3–2/3 of segments; segment margin unmodified, often only ± recurved; spores tan, coarsely ridged.
± 20 species: America. (Greek: silver ornament) Closer to Pellaea than to Notholaena.
Unabridged references: [Windham 1987 Amer Fern J 77:37–41]

Key to Argyrochosma

A. jonesii (Maxon) Windham JONES' FALSE CLOAK-FERN
NATIVE
Leaf: 5–15 cm; stipe dark brown; basal pinna stalk < 5 mm; pinnule stalk 0–1.5 mm; segments generally 2–5 mm. Sporangia: 64-spored.
2n=54,108. Generally calcareous rock crevices, cliff bases; 400–1800 m. s High Sierra Nevada, Outer South Coast Ranges, San Gabriel Mountains, White and Inyo Mountains, Desert Mountains; to southwestern Utah, Arizona. [Online Interchange]

Previous taxon: Argyrochosma
Next taxon: Argyrochosma limitanea subsp. limitanea

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 29 2014
Citation for this treatment: [Author of taxon treatment] 2013. Argyrochosma, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14137, accessed on Jul 29 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


click for enlargement Argyrochosma jonesii
See CalPhotos for additional images
© 2003 James M. Andre

Bioregions in which Argyrochosma jonesii occurs Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
map of distribution 1
View elevation by latitude chart Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.