Jepson eFlora: Taxon page
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Argyrochosma limitanea subsp. limitanea
SOUTHWESTERN FALSE CLOAK-FERN

Higher Taxonomy
Family: PteridaceaeView DescriptionDichotomous Key

Common Name: BRAKE FAMILY
Habit: 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.
Genera In Family: +- 40 genera, 500 species: worldwide, especially dry areas. Note: CA members of Cheilanthes moved to the distantly related Myriopteris; Pellaea breweri to be moved as well, from a to-be-redefined Pellaea; traditional, often untenable limits of genera outside CA also being clarified using molecular phylogenetics.
eFlora Treatment Author: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux, except as noted
Scientific Editor: Alan R. Smith, Thomas J. Rosatti.
Genus: ArgyrochosmaView DescriptionDichotomous Key

Habit: 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.
Species In Genus: +- 20 species: America. Etymology: (Greek: silver ornament) Note: Closer to Pellaea than to Notholaena.

Argyrochosma limitanea (Maxon) Windham subsp. limitanea
NATIVE
Leaf: 10--25 cm; stipe dark brown to black; blade ovate to triangular; basal pinna stalk 5--10 mm; pinnule stalk 3--6 mm; segments generally 1.5--3 mm. Sporangia: 32-spored. Chromosomes: n=2n=81.
Ecology: In crevices, especially bases of calcareous rocks; Elevation: 1800 m. Bioregional Distribution: e DMtns (New York Mtns); Distribution Outside California: to Utah, New Mexico, northwestern Mexico. Note: Apogamous.
Synonyms: Cheilanthes limitanea (Maxon) Mickel var. limitanea; Notholaena limitanea Maxon; Argyrochosma limitanea var. limitanea, ined.
eFlora Treatment Author: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Argyrochosma limitanea subsp. limitanea

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Citation for this treatment: Ruth E.B. Kirkpatrick, Alan R. Smith & Thomas Lemieux 2016. Argyrochosma limitanea subsp. limitanea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=49272, accessed on May 06, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 06, 2016.


Geographic subdivisions for Argyrochosma limitanea subsp. limitanea:
e DMtns (New York Mtns);
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.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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