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|
|TREATMENT FROM THE JEPSON MANUAL||
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Jepson Interchange (more information)
©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, 1many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1many 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)45; stamens 45, 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):128. See glossary p. 25 for illustrations of general family characteristics.
Annual, perennial herb, subshrubs, decumbent to erect, taprooted
Stems simple or branched from base or above
Leaves simple, entire to pinnately lobed; basal petioled, ovate to spoon-shaped; cauline reduced upward, sessile, (ob)lanceolate to (ob)ovate
Inflorescence: heads radiate or discoid, terminal, solitary or clustered; involucres hemispheric, bell-shaped, obconic, or cylindric; phyllaries in 49 series, thin to tough but flexible, tips green or tinged purplish; receptacle concave, naked, shallowly pitted
Ray flowers present or 0, fertile or sterile; corollas yellow or white to purple
Disk flowers generally fertile (except L. occidentalis); corollas yellow, violet, purple, pink, or white, funnel-shaped to cylindric, marginal ones in rayless heads often enlarged and bilateral, deeply lobed on inner side, lobes spreading from head center; style appendages flat, triangular, awl-shaped, or cusped
Fruit obconic, mottled purple-brown; hairs dense, appressed, silky; pappus 0 in ray flowers, in disk flowers of many bristles, these free or fused at base, or fused throughout into awns, white, tan, or red-brown
Species in genus: 14 species: CA; NV, AZ, n Baja CA
Etymology: (C.F. Lessing, 18091862, German specialist in Asteraceae)
Incl CA sp. previously treated in Benitoa and Corethrogyne.
Annual; herbage grayish tomentose, sometimes becoming glabrous with age
Stems decumbent or erect, 0.34 dm
Leaves: basal deciduous, < 6 cm, oblanceolate or long-tapered obovate, entire to pinnately lobed; cauline < 2 cm, awl-shaped or linear to obovate, entire or tip with few teeth
Inflorescence: heads discoid, solitary, terminal; involucres 46 mm, narrowly obconic to bell-shaped; phyllaries oblong, obtuse or acute, puberulent or tomentose, margins with large sessile glands
Ray flowers 0
Disk flowers 1025; corollas funnel-shaped to tubular, marginal corollas funnel-shaped in small heads, yellow, with or without white band in throat; style branches 12 mm, appendages 0.71.3 mm, with long, abrupt point
Fruit 1.53.5 mm; pappus bristles many, free to base, white or tannish white
Ecology: Sandy soils
Elevation: 2001850 m.
Bioregional distribution: Transverse Ranges, White and Inyo Mountains, Mojave Desert
Distribution outside California: w Nevada, nw Arizona
Herbage densely and persistently tomentose
Leaves: cauline few, clasping base of involucre
Inflorescence: phyllaries densely and persistently tomentose
Ecology: Open slopes in sandy soil
Elevation: 3001850 m.
Bioregional distribution: e Western Transverse Ranges, w Mojave Desert
Distribution outside California: w Nevada
Flowering time: Jul
Synonyms: L. germanorum Cham. var. p. J.T. Howell
|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).|