Jepson Herbarium
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Perennial, 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

Plant in soil or rock crevices; rhizome short- to long-creeping[- decumbent], generally many-branched, scales generally lance- linear, pale to dark, mid-stripe dark or not.
Leaf: < 75 cm, young leaf tip hooked or coiled; stipe cylindric, red-brown to ± black; blade generally 2–3- pinnate, generally oblong to narrowly triangular; segments generally small, ± flat or abaxially concave (from recurved margins).
Sporangia: along margin, in discrete patches to continuous, partly to completely covered by recurved margin (generally not recurved in Cheilanthes cooperae).
150+ species: generally Am, generally dry areas. (Greek: lip flower, from location of sporangia)

Rhizome short-creeping; scales dark brown or black, some with narrow light brown margin.
Leaf: 8–22(30+) cm, 2–4(6) cm wide, dark green; stipe < 2 mm wide, scales lance- linear, ± white to red-brown; blade 3–4- pinnate; segments small, ± round, adaxially glabrous, abaxially concave, obscured by scales exceeding margin, scales originating from axes, > 2 mm, ± > 1 mm wide, ± entire, covering generally more highly dissected scales.
Sporangia: obscured by recurved segment margin, scales.
2n=60. Crevices, bases of rocks, sun or shade; 600–2400 m. North Coast Ranges, Sierra Nevada, Sacramento Valley (Sutter Buttes), San Francisco Bay Area, South Coast Ranges, Transverse Ranges, Peninsular Ranges, East of Sierra Nevada, Desert Mountains;

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; 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 have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. 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 Manual flowering time.