Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

ASTERACEAE

SUNFLOWER FAMILY

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.

HULSEA

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]
Self-sterile.

Native

H. californica Torr. & A. Gray

SAN DIEGO SUNFLOWER

Biennial 4–12 dm, ± woolly, ± glandular
Leaves: basal 6–10 cm, entire
Inflorescence: heads ± 20 mm, 20 mm wide; phyllaries 9–14 mm, linear-lanceolate, long-acuminate
Ray flowers 22–40; corollas 15–20 mm, 3–5 mm wide, yellow, puberulent
Fruit 4–6 mm, silky-hairy; pappus scales < 2 mm, ± equal
Chromosomes: 2n=38
Ecology: Open sites
Elevation: 1000–2000 m.
Bioregional distribution: s Peninsular Ranges (Laguna, Cuyamaca mtns, San Diego Co.).
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for HULSEA%20californica being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Hulsea californica
Retrieve dichotomous key for Hulsea
Retrieve multiple-entry key (MEKA) for Hulsea
Overlay Consortium of California Herbaria specimen data by county on this map
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