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.
Subshrub, densely stellate-tomentose or -scabrous
Stem erect
Leaf: petiole stout; blade lanceolate to round, cordate, ± entire or irregularly fine-toothed
Inflorescence: panicle or flowers solitary in axils; bractlets subtending calyx 0
Flower: petals yellow-orange to red-lavender; stigmas head-like
Fruit: segments 8–12, upper portion dehiscent, with 2 spreading, scarious wings; lower portion seed-bearing, indehiscent, firm, net-veined
Seeds 1–3, white-puberulent
Species in genus: 4 species: sw US, Mex
Etymology: (F.H. Horsford, Vermont, botanical collector)
Reference: [Fryxell 1985 Syst Bot 10:268–272]
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Stem 10–40 dm, few-branched, harshly stellate-canescent
Leaf: blade 2–9 cm, slightly sticky, acute to acuminate, ± cordate, finely toothed
Flower: pedicels 2–4 mm in flower, 6–10 mm in fruit; calyx lobes 3–5 mm, wide-ovate, acuminate; petals 10–21 mm, pink to red-lavender, drying bluish
Fruit: segments 10–12, 7–8 mm; wings ± lanceolate, 3 X length of lower part
Seed 1 per segment
Ecology: Uncommon. Rocky canyons, creosote-bush scrub, washes
Elevation: 100–500 m.
Bioregional distribution: Sonoran Desert
Distribution outside California: s Arizona, n Mexico
Flowering time: Mar–Apr, Nov–DecHorticultural information: TRY.
See the CNPS Inventory for information about endangerment and rarity.| 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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