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 |
Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.
Perennial from ± thick caudex; sap milky
Stems ± scapose
Leaves basal, entire to pinnately lobed, ± glabrous
Inflorescence: heads ligulate, solitary, erect; outer phyllaries ± = inner, glabrous or margins and midrib soft-white-hairy; receptacle convex, naked
Flowers 13–many; corollas yellow, readily withering, ligules > involucre, often reddish below
Fruit cylindric, ± 10-ribbed, tapered, not beaked, brown; pappus of many soft bristles or tapered, bristle-tipped scales
Species in genus: 4 species: North America
Etymology: (Greek: false Calais )
Reference: [Chambers 1957 Contr Dudley Herb 5:57–68]
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Stems 5–40 cm, generally tomentose below head
Leaves widely linear, entire to wavy-margined, often finely ciliate
Inflorescence: involucre 12–25 mm; phyllaries ± linear, outer < or = inner, glabrous or soft-white-hairy, especially on margins and midrib, midrib generally purple-lined
Fruit 8–13 mm, cylindric-fusiform, pale brown; pappus 10–20 mm, silvery, of 10–30 narrow, tapered, bristle-tipped scales
Chromosomes: 2n=18
Ecology: Open, rocky places
Elevation: 700–2000 m.
Bioregional distribution: Klamath Ranges, Modoc Plateau
Distribution outside California: to Washington, Idaho, Montana
| 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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