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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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.

HEDYPNOIS

G. Ledyard Stebbins

Annual; sap milky
Stems branched, spreading
Leaves basal and cauline, alternate, entire to dentate or pinnately lobed
Inflorescence: heads ligulate, small; phyllaries in 2 series, outer small, inner equal, hardened, enveloping outer fruits; receptacle naked
Flowers many; ligules yellow, readily withering
Fruit cylindric, not beaked, often strongly incurved; pappus of long or short scales, sometimes mixed with bristles
Species in genus: 3 species: Atlantic islands, Medit
Etymology: (Greek: name of Pliny for a kind of wild endive)

Introduced

H. cretica (L.) Dum.Cours.

CRETE WEED

Herbage finely bristly; hairs minutely forked or barbed at tip
Stems 0.5–4 dm
Leaves 5–18 cm, generally oblong to oblanceolate; lower tapered to base
Inflorescence: heads solitary or 1–several in open cymose clusters; peduncles generally thickened; involucre 8–10 mm; phyllaries linear, strongly incurved, glabrous to densely bristly
Fruit 5–7 mm, minutely scabrous; pappus of outer achenes a low crown of fused scales; pappus of inner achenes short scales + elongated, bristle-tipped scales
Chromosomes: 2n=8,11,12,13,14,15,16, 18
Ecology: Locally naturalized weed of gardens, pastures, roadsides, etc.
Elevation: 0–750 m.
Bioregional distribution: Outer North Coast Ranges, Sierra Nevada Foothills, San Joaquin Valley, San Francisco Bay Area, Outer South Coast Ranges, South Coast
Distribution outside California: native to Mediterranean

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bioregional map for HEDYPNOIS%20cretica being generated
 
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