Jepson Flora Project: Jepson Interchange    

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

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

NYCTAGINACEAE

FOUR O'CLOCK FAMILY

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).

ALLIONIA

WINDMILLS, TRAILING FOUR O'CLOCK

Annual, short-lived perennial herb, glabrous to densely glandular-hairy
Stem trailing, < 1 m
Leaf petioled; blade < 4 cm, oval to oblong, paler below
Inflorescence: involucres clustered, each involucre resembling 1 flower; bracts 3, ± 1/2 fused, hairy; flowers 1 per bract, blooming together
Flower: stamens generally 4(–7), exserted; stigma ± spheric, exserted
Fruit bilateral
Species in genus: 2 species: Am
Etymology: (C. Allioni, Italian botanist, 1725–1804)

Native

A. incarnata L.


Flower: perianth 3–15 mm, 3-lobed, oblique, red-purple, tube funnel-shaped, limb longest above subtending bract
Fruit 3–4.5 mm, compressed, bilateral; margin strongly incurved, entire or with 3–5 irregular teeth; outer surface convex; inner surface concave, with 2 rows of sticky glands
Ecology: Creosote-bush scrub
Elevation: 0–1500 m.
Bioregional distribution: Desert
Distribution outside California: to Colorado, Texas, S.America
Flowering time: Apr–Sep
Horticultural information: DRN, DRY, SUN: 10, 11, 17, 18.

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bioregional map for ALLIONIA%20incarnata being generated
 


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