Jepson Flora Project: Jepson Interchange    

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

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Elizabeth McClintock

Annual to perennial herb, rarely shrub, sometimes armed with prickles
Stem generally branched
Leaves simple, generally in basal rosettes and cauline, generally opposite, ± fused at base around stem, entire, toothed, or pinnately lobed or dissected, petioled or sessile; stipules 0
Inflorescence: head, terminal, on long peduncle, many-flowered, dense, ± spheric or cylindric, subtended by involucre; each flower generally enclosed ± at base by an involucel of 1–2 generally fused bractlets, this generally expanded above or in fruit, generally subtended by a receptacle bract
Flower bisexual, ± bilateral, especially outermost; calyx limb cup-shaped or divided into 4–5(10) linear or bristle-like segments; corolla ± funnel-shaped, lobes 4–5, < tube, generally unequal; stamens generally 4, attached to corolla tube, alternate lobes; ovary inferior, 1-chambered, style slightly exserted from corolla, stigma 2-lobed
Fruit: achene, enclosed by sometimes enlarged involucel, generally topped by persistent calyx
Genera in family: 10–11 genera, 270–350 species: Eur to e Asia, c&s Africa; several cultivated for ornamental
Reference: [Moore 1976 Flora Europaea 4:56–72]



Annual to perennial herb, unarmed
Stem erect, < 6 dm, branched, glabrous or hairy
Leaf generally < 1 dm, pinnately lobed or dissected
Inflorescence ± spheric; outermost flowers generally larger; peduncle often long; involucre bracts ± equal, generally < flowers, lanceolate, flexible; involucel tubular, sometimes with expanded, fan-like, many-veined limb
Flower: calyx limb divided into 5 bristles; corolla generally blue, purple, pink, or white, lobes 5, upper 2 smaller; stamens 4, rarely 2
Fruit ± angled, generally hairy
Species in genus: ± 80 species: temp Eurasia, Africa
Etymology: (Latin: itch, from medicinal use)


S. stellata L.

Stem < 4 dm
Leaves on stem dentate to pinnately dissected
Inflorescence 20–50 mm wide, not elongating at maturity; limb of involucel 3–4 mm, funnel-shaped
Fruit: calyx bristles scarcely > expanded, fan-like, scarious, many-veined limb of involucel
Ecology: Disturbed urban areas
Elevation: < 250 m.
Bioregional distribution: South Coast
Distribution outside California: native to sw Europe
Cult as ornamental, rarely naturalized.

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