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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

CHEILANTHES
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 America, generally dry areas. (Greek: lip flower, from location of sporangia) {hort link}

Key to Cheilanthes

1. Leaf blade with scales, nonglandular; young leaf tip hooked

2. Rhizome scales loosely appressed, 1-colored; sporangia 32-spored; rhizome long-creeping, leaves scattered ..... C. wootonii

2' Rhizome scales strongly appressed, 1- or 2-colored; sporangia 64-spored; rhizome ± short-creeping, leaves clustered

3. Rhizome scales 1- or 2-colored, dark brown or black, some with narrow light brown margin; scales on abaxial leaf ± > 1 mm wide, obscuring surface, exceeding margin ..... C. covillei

3' Rhizome scales 2-colored, with dark mid-stripe, light margins; scales on abaxial leaf ± < 1 mm wide, not obscuring surface, ± exceeding margin

4. Leaf blade scales linear, 2–3(5) cells wide; leaf 2–3 pinnate, segments ± round to generally oblong ..... C. gracillima

4' Leaf blade scales lance-ovate, > 5 cells wide; leaf 3–4 pinnate, segments ± round

5. 2-colored rhizome scales with well-defined, dark mid-stripe and light brown margins 1/2 to = width of mid-stripe; leaf gray-green, segments round to ± cordate ..... C. clevelandii

5' 2-colored rhizome scales with well-defined, dark mid-stripe and light brown margins much narrower than mid-stripe; leaf dark green, segments ± round ..... C. intertexta

1' Leaf blade without scales, glandular or not; young leaf tip hooked or coiled

6. Rhizome scales with dark mid-stripe; young leaf tip coiled

7. Hairs on leaf segment adaxially sparse, generally not intertwined; dark mid-stripe of rhizome scales not thread-like, > 0.1 mm wide at base; pinna stalk ± 0–1 mm; pinnule stalk ± green adaxially, ± brown abaxially ..... C. feei

7' Hairs on leaf segment adaxially dense, intertwined; dark mid-stripe of rhizome scales thread-like, < 0.1 mm wide at base; pinna stalk 1–2(5) mm; pinnule stalk generally ± brown adaxially, abaxially ..... C. parryi

6' Rhizome scales without dark mid-stripe; young leaf tip hooked or coiled

8. Leaf surface with ± clear, sticky exudate, generally with short glandular hairs and sessile glands ..... C. viscida

8' Leaf surface without sticky exudate, with short or long, glandular or nonglandular hairs

9. Rhizome scales of 1 kind, tan to red-brown ± throughout; leaf segment abaxial surfaces visible through ± sparse, untangled, glandular and nonglandular hairs; young leaf tip coiled; rhizome short-creeping ..... C. cooperae

9' Rhizome scales of 2 kinds, some maroon with a tan, curly, hair-like tip, others tan ± throughout, narrower; leaf segment abaxial surfaces not visible through dense, tangled, nonglandular hairs; young leaf tip hooked; rhizome short- to long-creeping ..... C. newberryi

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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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