|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
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.
Species in genus: 1 sp
Etymology: (M. Venegas, Mexican writer, missionary to CA, 16801764)
Shrub 515 dm
Stems generally several, ± puberulent
Leaves simple, alternate; petiole 15 cm; blade 315 cm, triangular-ovate, 3-veined from base, acute to acuminate, entire to coarsely toothed, minutely puberulent, resin-dotted below
Inflorescence: heads radiate, solitary or in ± leafy cymes; peduncles generally 23 cm, slender, bracts 0; involucre 13 cm diam, hemispheric; phyllaries unequal, in several series, 514 mm, oblong to widely obovate, obtuse, ± veiny, outer spreading, middle > inner; receptacle flat or rounded, naked
Ray flowers 1221; ligule 1530 mm, yellow
Disk flowers many; corolla 56 mm, yellow, tube base glandular; stamen tips triangular; style tips ± obtuse-triangular
Fruit 23 mm, ± cylindric, ribbed, ± curved, dark brown, glabrous; pappus 0
Ecology: Canyons, moist, wooded slopes
Elevation: < 900 m.
Bioregional distribution: Outer South Coast Ranges, Southwestern California
Distribution outside California: Baja California
Horticultural information: 15, 16, 17, 24 SHD: 14, 20, 21, 22, 23 &IRR: 19; also STBL.
|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).|