This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants.
|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press
|The second edition of The Jepson Manual (2012) is available from the University of California Press|
|See also the Jepson eFlora, which parallels the Second Edition|
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 or perennial herb
Stems generally erect
Leaves opposite or alternate, generally reduced upward, often 3-veined from near base, generally rough-hairy
Inflorescence: heads radiate, solitary or in cymes; involucre bell-shaped to hemispheric; phyllaries in 13 generally ± equal series, free; receptacle flat to rounded; chaff scales 03-lobed
Ray flowers 10many, sterile; ligules yellow
Disk flowers many; corollas yellow to red or purple, tube short, throat base often swollen, lobes triangular; style appendages triangular
Fruit oblanceolate to obovate, ± compressed; sides rounded; pappus generally of 2 deciduous, lanceolate to ovate scales (sometimes also 1several shorter scales)
Species in genus: 67 species: Am
Etymology: (Greek: sun flower)
Reference: [Heiser 1969 Mem Torrey Bot Club 22(3):1218]
Annual or perennial herb < 15 dm, from taproot
Leaves generally alternate, ± long-petioled; blade lanceolate to ovate, wedge-shaped to ± cordate at base, obtuse to acute, densely canescent to long-silky
Inflorescence: heads 1few; involucre 828 mm diam; phyllaries 812 mm, ± lanceolate, acute, canescent to soft-hairy, ± = disk; chaff scales 1011 mm, entire to deeply 3-lobed
Ray flowers 1321; ligules 1225 mm
Disk flowers: corollas 57 mm, lobes red to dark purple in CA
Fruit 38 mm; pappus scales 23 mm (generally also several shorter scales)
Ecology: Open, sandy places
Elevation: generally < 300 m.
Bioregional distribution: South Coast, Sonoran Desert
Distribution outside California: to Texas, n Mexico
Generally perennial herb, ± shrubbySee the CNPS Inventory for information about endangerment and rarity.
Leaves: blades generally 37 cm, triangular-ovate, densely soft-hairy
Inflorescence: phyllaries not > disk; central chaff scales glabrous or fine-appressed-hairy
Fruit 48 mm, densely long-hairy
Ecology: Sand dunes
Elevation: generally < 100 m.
Bioregional distribution: s Sonoran Desert (Imperial Co.)
Distribution outside California: sw Arizona, n Mexico
Flowering time: MarMay, OctJan
Synonyms: H. tephrodes A. Gray
|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).|