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 |
Perennial, shrub, tree, glabrous or hairy
Stem often forked
Leaves opposite, sessile or petioled, pairs generally unequal; blade generally entire
Inflorescence generally forked; of spikes, clusters, or umbels, each unit sometimes with a calyx-like involucre
Flower bisexual, radial; perianth of 1 whorl, petal-like, bell- to trumpet-shaped, base hardened, tightly surrounding ovary in fruit, lobes 4–5, generally notched to ± bilateral; stamens 1–many; ovary superior (appearing inferior because of hardened perianth base), style 1
Fruit: achene or nut, smooth, wrinkled, or ribbed
Genera in family: 30 genera, 300 species: warm regions, especially Am; some ornamental (Bougainvillea ; Mirabilis , four o'clock).
Perennial from thick caudex
Stem little-branched, erect, > 7 mm diam; internodes with sticky brown ring
Leaves few, ± on lower stem half, petioled; blade oblong to round, thick
Inflorescence openly branched; flowers in heads, racemes, or umbel-like clusters; bracts 1–3, small, not forming an involucre
Flower: perianth funnel-shaped; stamens 3 or 5, generally long-exserted; stigma ± spheric, exserted
Fruit finely 10-ribbed, glabrous
Species in genus: 5 species: especially Chihuahuan Desert, ne Mex
Etymology: (Latin: ring stem, from sticky internodal rings)
| Native |
Stem < 1.5 m
Leaf: blade 3–10 cm, oblong to ovate-triangular, stiff-hairy, hairs with enlarged, dark, glandular base
Inflorescence: head-like umbels on long peduncles
Flower: perianth ± 8 mm, tube ± green, hairy, limb pale pink
Fruit 4–5 mm, thick-fusiform, gray-brown
Ecology: Rocky slopes, canyons
Elevation: < 1200 m.
Bioregional distribution: ne Mojave Desert (Death Valley region)
Flowering time: Apr–May
Synonyms: Boerhavia a. Coville
| 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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