|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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 45, generally notched to ± bilateral; stamens 1many; 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 taproot, minutely hairy
Stem prostrate to ascending
Leaf sessile or petioled; blade < 8 cm, ± firm
Inflorescence: bracts 13, free, not forming an involucre; flower generally 1
Flower nocturnal or some cleistogamous; perianth trumpet-shaped, white, tube slender; stamens 5 (2 in cleistogamous flowers), slightly exserted; stigma ± spheric, exserted slightly beyond anthers
Fruit oblong, with rounded ridges, glabrous; wings 0
Species in genus: 7 species: especially Chihuahuan Desert, ne Mex
Etymology: (Greek: without closure, from absence of involucre)
Pollinated by hawkmoths.
See the CNPS Inventory for information about endangerment and rarity.
Stem < 1 m
Leaf petioled; blade < 4 cm, lanceolate to triangular, acute to acuminate, margins ± wavy
Flower: perianth 717 cm, tube ± green or pale purple, limb 13 cm wide, white
Fruit 610 mm, oblong, ridges 5, 2 parallel grooves between adjacent ridges
Ecology: Dry places, generally on limestone
Elevation: 102500 m.
Bioregional distribution: e Sonoran Desert (Maria Mtns, e Riverside Co.)
Distribution outside California: to Texas, n Mexico
Flowering time: May
Horticultural information: TRY.