|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).
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 45; stamens 45, included; stigma linear, included
Fruit: body fusiform; lobe-like wings (0)25 (if present, prominent, opaque, thick, not continuous above fruit body)
Species in genus: 25 species: w North America
Etymology: (Greek: graceful)
[Galloway 1975 Brittonia 27:328347] Closely related to Tripterocalyx.
Stem prostrate to ascending, < 80 cm
Leaf: petiole 0.55 cm; blade 15 cm, 14.5 cm wide, triangular-ovate to ± round
Inflorescence: peduncle 210 cm; bracts 311 mm, lanceolate to narrowly ovate; flowers 1535
Flower: perianth tube 1.33.5 cm, ± pink, limb 618 mm wide, pale to bright magenta
Fruit 510 mm; base of floral tube hardened as a beak on top of fruit body; wings 35, 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.