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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.

ASTERACEAE

SUNFLOWER FAMILY

David J. Keil, Family Editor and author, except as specified

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.

STEPHANOMERIA

G. Ledyard Stebbins

Annual to shrubs, glabrous or hairy; sap milky
Stems branched, 0.5–3 m
Leaves cauline or some basal, alternate
Inflorescence: heads ligulate; involucre cylindric; phyllaries in 2–several series; receptacle naked
Flowers few–many; ligules lavender, pink, or whitish, readily withering
Fruit linear, club-shaped, or oblong; pappus generally of 9–30 stiff, plumose bristles
Species in genus: 24 species: w North America
Etymology: (Greek: wreath division)
Reference: [Gottlieb 1972 Madroño 21:463–481]
Annual, tap-rooted, rosette-forming species highly variable and complexly interrelated.

Native

S. pauciflora (Torr.) A. Nelson

WIRE-LETTUCE

Perennial or subshrub, 3–6 dm, glabrous or densely short-tomentose
Stems: branches many, ± stout, rigid
Leaves: cauline often reduced to scales
Inflorescence: heads at tips of side branches; peduncles 1–13 mm (or 0 above); involucre 8–10 mm; outer phyllaries << inner, appressed or spreading; inner phyllaries 5
Flowers 3–5; ligules lavender-pink
Fruit 3–4 mm; pappus plumose but not to base, pale brownish
Chromosomes: 2n=16
Ecology: Dry flats, deserts
Elevation: < 2400 m.
Bioregional distribution: s High Sierra Nevada, Tehachapi Mountain Area, San Joaquin Valley, Inner South Coast Ranges, Transverse Ranges, East of Sierra Nevada, Desert
Distribution outside California: to Utah, Texas, nw Mexico; also in Kansas

Native

var. parishii (Jeps.) Munz

Herbage densely short-tomentose
Ecology: Gravelly soil
Elevation: < 1000 m.
Bioregional distribution: Mojave Desert
Distribution outside California: w Nevada
Horticultural information: TRY.

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bioregional map for STEPHANOMERIA%20pauciflora%20var.%20parishii being generated
 
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).

Retrieve Jepson Interchange Index to Plant Names entry for Stephanomeria pauciflora var. parishii
Retrieve dichotomous key for Stephanomeria
Retrieve multiple-entry key (MEKA) for Stephanomeria
Overlay Consortium of California Herbaria specimen data by county on this map
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