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, perennial herb, generally glabrous
Stem prostrate to erect or climbing; nodes often rooting
Leaves alternate, entire, simple, linear to ovate, with closed basal sheath or lower leaf clasping stem
Inflorescence: generally cyme or umbel, axillary
Flower generally bisexual, bilateral or radial, generally insect-pollinated; sepals 3, generally green; petals 3, blue, white, or sometimes rose or purple, generally ephemeral; stamens 6 (3 sometimes sterile), filaments generally slender, often hairy; ovary superior, chambers 3
Fruit: generally capsule
Genera in family: ± 50 genera, 700 species: especially tropical, subtropical; some cultivated as ornamental.
Inflorescence: cyme, subtended by boat-shaped bract
Flower bilateral, generally blue, ephemeral; petals unequal, 2 large and showy; fertile stamens 3, sterile stamens 3, filaments glabrous
Species in genus: ± 150 species: tropical, warm temp regions
Etymology: (Johan, 16291692, and nephew Caspar, 16671731, Commelin, Holland)
Reference: [Maheshwari & Maheshwari 1955 Phytomorphology 5:413422]
Stem straggling, rooting at nodes
Leaf 3060 mm, ± widely lanceolate; margins generally wavy and hairy
Flowers of 2 kinds; those of upper stem opening, ± 1 cm diam, petals blue, filaments glabrous; cleistogamous flowers on underground stems
Ecology: Disturbed, moist, urban areas
Elevation: < 500 m.
Bioregional distribution: South Coast
Distribution outside California: tropical weed; native to tropical Asia, Africa
|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).|