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Wild four-o'clock

Also known as: umbrellawort

Mirabilis nyctaginea (Michx.) MacMill.

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Wild four-o'clock
Wild four-o'clock
Wild four-o'clock fruit
Wild four-o'clock leaves
Wild four-o'clock fruiting
Wild four-o'clock
Wild four-o'clock

Morphology

Stem
Erect or ascending, angled, much-branched, glabrous or slightly pubescent, sometimes waxy; nodes swollen.
Leaves
Opposite, simple, on stalks 1/2 to 3 inches long, upper leaves often sessile, ovate to lanceolate, 2 to 5 inches long, 1 to 3 inches wide, mostly glabrous; bases heart-shaped; margins entire; tips pointed or blunt.
Inflorescence
Umbel-like clusters of 3-5 flowers, terminal.
Flower
Calyces bell-shaped, pink to reddish purple, about 1/2 inch wide, 5-lobed, lobes united for part of their length; petals absent; stamens 3-5, projecting beyond edges of calyces.
Fruit
Dark, narrowly oblong, hard, strongly ribbed, hairy; seeds small, yellowish brown.

Ecology

Habitat
Disturbed areas, woodland edges, thickets, roadsides, and waste areas, most abundant on limestone soils.
Distribution
Throughout Kansas.

Practical Information

Uses
Native Americans applied a poultice of crushed root to boils, strained muscles, and burns. Dried roots were ground and applied to infant's sore mouths. The roots were boiled and the liquid taken for fevers and to expel internal parasites. The leaves were smoked like tobacco.

Additional Notes

Comments

After pollination, the calyces fall and the subtending, 5-lobed, leafy bracts enclose the fruits. "Four-o'clock" refers to the flowers opening in late afternoon and "umbrellawort" refers to the overhanging bracts that resemble an umbrella. Wild four-o'clock is related to bougainvillea.

Special Notes: See narrowleaf four o'clock.
Quick Facts
Plant Type
Wildflower
Family
Nyctaginaceae - Four-o'clock Family
Life Span
Perennial
Height
1-4 feet
Origin
Native
Last Updated
2021-08-27
Color Groups
Pink, Red & Orange Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: May, June, July, August