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, in or near water; roots fibrous, from a taproot or not, generally from lower leaf axils as well
Stem generally soft
Leaves simple, opposite, ± 4-ranked; stipules scarious
Inflorescence: flowers axillary or terminal, solitary or clustered
Flowers small, inconspicuous, radial, bisexual; sepals and petals generally free, 3–5, equal in number; ovary spheric, styles 3–5, very short
Fruit: capsule, septicidal, ± spheric, ovoid, or depressed-ovoid, walls thin; chambers 2–5, each several–many-seeded
Seed very small; surface net-like or glossy
Genera in family: 2 genera, 50 species: ± worldwide
Reference: [Tucker 1986 J Arnold Arbor 67:471–483]
Annual, perennial herb, glandular-hairy
Stem prostrate to ascending, simple to much-branched; base sometimes ± woody
Leaves 4-ranked; petiole < blade; blade elliptic, serrate, base wedge-shaped, tip acute
Inflorescence: flowers axillary or terminal, solitary or clustered
Flower: sepals 5, deltate; petals 5, oblong, membranous, glabrous; stamens 5–10, filaments ± = petals, anthers elliptic; styles 5
Fruit ovoid; chambers 5, each many-seeded
Seeds not visible through fruit wall, oblong, ± curved, brown; surface obscurely net-like
Species in genus: ± 25 species: generally Old World tropical, 1 North America
Etymology: (P.J. Bergius, student of Linnaeus, 1730–1790)
| Native |
Annual or short-lived perennial herb, glandular-hairy except petals
Flower: sepals acute, midvein rib-like, green, margins scarious; petals whitish
Ecology: Moist, disturbed soils, sandbars along rivers, margins of pools
Elevation: < 200 m.
Bioregional distribution: Great Central Valley, South Coast
Distribution outside California: to e Washington, c&s US, ne Mexico
| 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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