|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
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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, scapose; sap milky
Leaves ± basal, entire to pinnately lobed, glabrous or mealy (hairs drying as minute, white scales)
Inflorescence: heads, ligulate, solitary, ± drooping in bud; involucre glabrous; phyllaries ± lanceolate, outer < 1/3 X inner
Flowers 8many; corollas readily withering, ± = involucre; ligules white or yellow, often reddish below
Fruit 10-ribbed, gray to brown or blackish; pappus scales 5, ± cut at tip, dull-white (silvery) to brownish, bristle-tip finely barbed
Etymology: (Greek: Stebbins' chicory, for G.L. Stebbins, Jr., Am geneticist, evolutionist, 1906)
Reference: [Jansen et al. 1991 Amer J Bot 78:10151027]
Species in genus: 2 species: w North America. Derived by hybridization: Uropappus lindleyi X annual Microseris.
Plant 1040 cmSee the CNPS Inventory for information about endangerment and rarity.
Leaf 515 cm
Inflorescence: involucre 1018 mm
Flowers: ligules yellow
Fruit 58 mm, brown to blackish; pappus scales < fruit, glabrous, midrib linear from near base, bristles 45 mm, hair-like, from irregularly cut scale tip
Ecology: Open, sandy, shaly, or serpentine sites
Elevation: 10500 m.
Bioregional distribution: n&c Central Coast
Synonyms: Microseris d. K.L. Chambers
Derived from Microseris bigelovii X Uropappus l.