Jepson Interchange (more information)
Print edition is available from the University of California Press
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This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
Perennial, in soil or on or among rocks; rhizome creeping to erect, scaly
Leaves generally all ± alike (or of 2 kinds, fertile and sterile), generally < 50 cm, often < 25 cm; petiole generally thin, wiry, often dark, in transverse section with vascular strands generally 1–3, less often many in a circle; blade generally pinnate or ± palmate-pinnate (see Adiantum ), often 2 or more compound, lower surface often with glands, ± powdery exudate, hairs, or scales; segments round, oblong, fan-shaped, or otherwise, veins generally free
Sporangia in sori or not, marginal, submarginal, or along veins, sometimes covered by recurved, often modified segment margins (false indusia); true indusia 0; spores spheric, sides sometimes flat, scar with 3 radiating branches
Genera in family: ± 40 genera, 500 species: worldwide, especially dry areas. Definition of Cheilanthes and related genera problematic; traditional limits often untenable.
Plant in soil or rock crevices; rhizome short-creeping, scales linear-lanceolate, tan to ± reddish throughout
Leaf < 40 cm; hairs 0; scales 0; petiole 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 whitish exudate on lower side or not
Sporangia along veins for outer 1/3–2/3 of segments; segment margin unmodified, often only slightly recurved; spores tan, coarsely ridged
Species in genus: ± 20 species: Am
Etymology: (Greek: silver ornament)
Considered closer to Pellaea than to Notholaena
Reference: [Windham 1987 Amer Fern J 77:37–41]Horticultural information: DFCLT.
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Leaf 10–25 cm; petiole dark brown to black; blade 3–5-pinnate, ovate to triangular, covered with whitish exudate on lower surface; basal 1° leaflets ± strongly ascending, stalks 5–10 mm; 2° leaflet stalk 3–6 mm; segments generally 1.5–3 mm
Sporangia 32-spored
Ecology: In crevices, especially bases of calcareous rocks
Elevation: 1800 m.
Bioregional distribution: e Desert Mountains (New York Mtns, San Bernardino Co.)
Distribution outside California: to Utah, New Mexico, nw Mexico
Synonyms: Cheilanthes l. (Maxon) Mickel var. l.; Notholaena l. Maxon
Produces spores asexually; common name, even more so than others, is applied to ferns in other groups.
See the CNPS Inventory for information about endangerment and rarity.| YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps). |
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