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, submersed, emergent, floating, or on wet ground
Leaves simple, alternate or whorled, ± in basal rosette or not; blade linear (especially underwater) to round, sagittate or cordate or not, bases generally sheathing, veins parallel; petioles sometimes inflated or 0 (especially underwater)
Inflorescence: raceme, spike, panicle, or 1-flowered, terminal but often appearing ± axillary, subtended by sheathing bract
Flower bisexual, radial or ± bilateral; perianth lobes generally 6, in 2 series of 3, petal-like; stamens equal or not, attached to perianth tube at various levels, 3, 6, (1, 4), sometimes 3 sterile, modified; ovary superior, 1–3-chambered
Fruit: 1-seeded utricle or many-seeded, loculicidal capsule
Seeds small, longitudinally ribbed or not
Genera in family: ± 6 genera, 30 species: most pantrop, some temp. Some cultivated as orns, some weeds, especially in rice fields
Reference: [Rosatti 1987 J Arnold Arb 68:35–71]
Annual, perennial herb, generally submersed, emergent, or on wet ground
Stem ± erect, slender, elongate, ± spreading, rooting at nodes or stout
Leaves alternate, linear, sessile, or ± in basal rosettes, ± ovate, long-petioled
Inflorescence generally 1-flowered
Flower ± radial; perianth salverform, lobes 6; stamens 3, alike or of 2 sizes, shapes, anthers coiling or not; ovary 1-chambered
Fruit: capsule
Seeds many, longitudinally ribbed
Species in genus: ± 12 species: tropical, temp Am, Africa
Etymology: (Greek: different, anther, from unequal anthers of most spp)
. Fls developed underwater generally cleistogamous.
| Introduced |
Annual, generally emergent or on wet ground (submersed as seedlings)
Leaf: blade > 4 cm; petiole > 15 cm
Flower appearing ± terminal; perianth white to blue-purple, tube > 1.5 cm; stamens 3, of 2 sizes, shapes, anthers not coiled
Ecology: Uncommon. Rice fields
Elevation: < 100 m.
Bioregional distribution: Sacramento Valley
Distribution outside California: native to c&e US, tropical America
| 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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