|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 large taproot
Leaf petioled; blade < 8 cm, fleshy, margin often wavy
Inflorescence: head; bracts 510, green, flowers blooming sequentially across head; receptacle flat to ± conic, studded with peg-like pedicels
Flower: perianth trumpet-shaped, nocturnal, lobes 45; stamens 35, included; stigma linear, included
Fruit: wings 35, wide, continuous above and below fruit body, thin, transparent, conspicuously net-veined
Species in genus: 3 species: arid North America
Etymology: (Greek & Latin: 3-winged cup, from fruit)
[Galloway 1977 Brittonia 27:328347] Closely related to Abronia.
See the CNPS Inventory for information about endangerment and rarity.
Stem < 3 dm, glandular-sticky
Leaf: blade 2.57 cm, ovate to elliptic, ± glandular-hairy
Flower: perianth (8)1825 mm
Fruit: wings hairy on edges and often on veins near base
Ecology: Sagebrush scrub
Elevation: 12001500 m.
Bioregional distribution: Modoc Plateau (Lassen Co.)
Distribution outside California: nw Nevada
Synonyms: Abronia c-m. Kellogg
Horticultural information: TRY.