|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.
Perennial from taproot or branched caudex, glandular
Leaves: basal persistent; cauline alternate, reduced above, oblanceolate, 13-veined
Inflorescence loose; heads radiate, 15; involucre bell-shaped; phyllaries in 34 ± equal series, lanceolate, 1-veined, outer graduated into upper leaves; receptacle convex, naked
Ray flowers 1025; ligules < 12 mm, yellow
Disk flowers many; corolla flaring slightly, yellow
Fruit narrowly oblong, ± cylindric, fusiform, or compressed, hairy; pappus of many white bristles in 1 series
Species in genus: ± 4 species: w North America
Etymology: (Anagram of Stenotus)
Reference: [Nesom & Morgan 1990 Phytologia 68:174180]
See the CNPS Inventory for information about endangerment and rarity.
Stems < 20 cm
Leaves < 8 cm, toothed
Inflorescence: involucre 1520 mm; phyllaries green
Disk flowers: corollas 810 mm
Fruit 5 mm; pappus < disk corolla
Ecology: Rocky alpine and subalpine slopes
Elevation: 29003700 m.
Bioregional distribution: c High Sierra Nevada (Inyo, Fresno cos.), White and Inyo Mountains
Flowering time: JulAug
Synonyms: Haplopappus p. (D.D. Keck) J.T. Howell
Horticultural information: TRY; DFCLT.