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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Richard Spellenberg

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).



Annual, perennial herb, generally glandular
Stem prostrate to ascending, generally ± red
Leaf generally fleshy, petioled
Inflorescence: head or umbel; flowers opening together or outer first; receptacle conic, ± smooth
Flower: perianth salverform to trumpet-shaped, generally fragrant, lobes 4–5; stamens 4–5, included; stigma linear, included
Fruit: body fusiform; lobe-like wings (0)2–5 (if present, prominent, opaque, thick, not continuous above fruit body)
Species in genus: 25 species: w North America
Etymology: (Greek: graceful)
[Galloway 1975 Brittonia 27:328–347] Closely related to Tripterocalyx.


A. villosa S. Watson

Annual, glandular-hairy
Stem prostrate to ascending, < 80 cm
Leaf: petiole 0.5–5 cm; blade 1–5 cm, 1–4.5 cm wide, triangular-ovate to ± round
Inflorescence: peduncle 2–10 cm; bracts 3–11 mm, lanceolate to narrowly ovate; flowers 15–35
Flower: perianth tube 1.3–3.5 cm, ± pink, limb 6–18 mm wide, pale to bright magenta
Fruit 5–10 mm; base of floral tube hardened as a beak on top of fruit body; wings 3–5, thin, rounded or angled, or 0
Ecology: Sandy places in creosote-bush or coastal-sage scrub
Elevation: < 1600 m.
Bioregional distribution: South Coast, Desert
Distribution outside California: s Nevada, sw Arizona, nw Mexico
Hybridizes with A. gracilis.


var. aurita (Abrams) Jeps.

Flower: perianth tube 2–3.5 cm, limb > 1.5 cm wide
Fruit: body nearly smooth; wings wide, extending well above body
Ecology: Coastal-sage scrub, chaparral, etc.
Elevation: < 1600 m.
Bioregional distribution: c&s South Coast, w Sonoran Desert
Flowering time: Mar–Aug
Horticultural information: sand, DRN, DRY, SUN: 13, 18, 19, 20, 21, 22, 23, 24.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for ABRONIA%20villosa%20var.%20aurita being generated

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