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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.



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.


Dieter H. Wilken

Annual to perennial herb
Stems 1–5, 1–15 dm, ± hairy, glandular
Leaves alternate; petioles generally ciliate; blades generally ± oblanceolate, entire to lobed, ± reduced upward
Inflorescence raceme-like; heads radiate, 1–many; bracts ± narrowly lanceolate; involucre hemispheric to obconic; phyllaries many, in 2–3 series, linear to obovate, green, ± glandular; receptacle naked
Ray flowers: ligules yellow to red
Disk flowers many; corollas 5–9 mm, yellow to orange, generally glabrous
Fruit 4–10 mm, linear to club-like, black, ± hairy; pappus scales generally 2 pairs, 4–10 mm, generally deeply cut, generally translucent
Species in genus: ± 8 species: w US
Etymology: (G.W. Hulse, US Army surgeon, botanist, 1807–1883)
Reference: [Wilken 1977 Madroño 24:48–55]


H. algida A. Gray

Perennial < 4 dm, ± long-soft-hairy, ± glandular
Leaves: basal < 10 cm, ± coarsely toothed
Inflorescence: heads 10–20 mm, 10–25 mm wide, phyllaries 8–15 mm, 1–3 mm wide, narrowly oblong, long-tapered
Ray flowers 25–60; corollas 10–15 mm, 2–4 mm wide, yellow, puberulent
Fruit 6–10 mm, sparsely hairy; pappus scales < 1.5 mm, ± equal
Chromosomes: 2n=38
Ecology: Subalpine to alpine talus
Elevation: 3000–4000 m.
Bioregional distribution: High Sierra Nevada, n East of Sierra Nevada, White and Inyo Mountains
Distribution outside California: to Oregon, Montana, Nevada
Flowering time: Jul–Aug

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bioregional map for HULSEA%20algida being generated

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