Jepson Interchange (more information)
Print edition is available from the University of California Press
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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 |
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©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, perennial herb, shrubs, trees, generally stellate-hairy; juice sticky; inner bark tough, fibrous
Leaves alternate, simple, petioled; blade generally palmately veined or lobed, stipules present
Inflorescence often leafy; whorl or involucre of bractlets often subtending calyx
Flower generally bisexual, radial; calyx lobes 5, margins abutting in bud; petals 5, free (fused at base to filament tube, so falling together); stamens many, filaments fused into a tube surrounding style, tube fused in turn to petal bases; pistil 1, ovary superior, chambers generally 5 or more, style branches, stigmas generally 1 or 2 X as many as chambers
Fruit of 5–many disk- or wedge-shaped segments, loculicidal capsule, or berry
Genera in family: 100 genera, 2000 species: worldwide, especially warm regions; some cultivated (e.g., Abelmoschus , okra; Alcea ; Gossypium , cotton; Hibiscus , Malvaviscus )
Recent taxonomic note: Recently treated to include Sterculiaceae [Angiosperm phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553; Alverson et al. 1999 Amer J Bot 86:1474–1486; Bayer et al. 1999 Bot J Linn Soc 129:267–303]
Mature fruit important for identification.
Annual, perennial herb, shrubs, trees
Inflorescence: flowers generally solitary in axils; bractlets subtending calyx 3–many, slender, persistent, forming an involucre
Flower generally showy; filament tube 5-toothed, anthers scattered on upper 1/2 below tip
Fruit: capsule; chambers 5
Seeds 2–many per chamber
Species in genus: 200 species: warm regions
Etymology: (Greek: name used by Dioscorides for marshmallow)
Reference: [Fryxell 1980 Techn Bull USDA 1624:1–53]
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Perennial, generally clonal from rhizomes, hairy
Stems 10–20 dm, some prostrate
Leaf: blade 6–10 cm, cordate, toothed, acuminate
Flower: peduncle 1–8 cm; calyx bell-shaped, veiny in fruit, sepals fused halfway; petals 6–10 cm, white or rose, base red
Fruit 2.5–3 cm, filling calyx
Seed spheric, glabrous
Ecology: Wet banks, marshes
Elevation: < 40 m.
Bioregional distribution: c&s Sacramento Valley, deltaic Great Central Valley
Distribution outside California: c to se US
Synonyms: H. californicus Kellogg, California hibiscus
Threatened by riverbank alterationHorticultural information: In cultivation.
| 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). |
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