TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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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, glabrous or hairy
Stems generally branched, erect or prostrate, < 60 cm
Leaves alternate, 13-pinnately lobed
Inflorescence: heads generally radiate, solitary; phyllaries in 2 or more series, scarious-margined; receptacle rounded to conic, chaffy
Ray flowers < 25, generally pistillate; ligules generally white
Disk flowers many; corolla yellow, tube swollen at base, enclosing tip of fruit; anther tips ovate, bases rounded or ± cordate; style branches truncate with shrub-like tips
Fruit slightly compressed, faintly striate; pappus 0
Species in genus: 4 species: Eur
Etymology: (Derivation unknown)
Reference: [Ross-Craig 19601963 Drawings Brit Plants 16: plate 6]
Introduced |
Annual, aromatic
Stems < 30 cm, simple or sparingly branched
Leaves ± 14 cm, 12-pinnately lobed; lobes linear; lower petioled; upper sessile
Inflorescence: heads ± 3 cm diam; phyllaries 34 mm, tips and margins dark brown, becoming reflexed; receptacle hemispheric, chaff scales ± 3 mm, transparent
Ray flowers ± 12; ligules 1015 mm, white
Disk flowers: corollas 710 mm
Fruit ± 1 mm, all same size, elliptic
Chromosomes: 2n=18
Ecology: Uncommon. Escape from cultivated in disturbed areas, especially vineyards
Elevation: < 100 m.
Bioregional distribution: s Outer North Coast Ranges (Sonoma Co.)
Distribution outside California: native to Mediterranean
Synonyms: Anthemis f. Brot