wild four-o'clock USDA PLANTS Symbol: MINY
U.S. Nativity: Native
Habit: Forbs/Herbs
Mirabilis nyctaginea (Michx.) MacM.

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Taxonomic Rank: Magnoliopsida: Caryophyllales: Nyctaginaceae
Synonym(s): heartleaf four o'clock, heart-leaf four-o'clock, heart-leaved four o'clock, heartleaf four-o'clock, prairie four o clock, wild four-o'clock
Native Range: U.S. - widespread (GRIN);

Appearance
Mirabilis nyctaginea is a perennial plant that can grow to be 2-4 ft. (0.61-1.2 m) tall, branching occasionally.
Foliage
Leaves are dark green, opposite, cordate, hairless, 4 in. (10.2 cm) long and 3 in. (7.6 cm) across. The upper leaves may be smaller and lanceolate.
Flowers
Flowers are magenta, trumpet shaped, 0.5 in. (1.3 cm) across, and are found in clusters of 3-5. They bloom in early summer and usually only open in the afternoon and at night, closing in the morning.
Fruit
Seeds are greyish brown to reddish brown in color, narrowly obovate, round to club-shaped, smooth, 0.4 in. (1 cm) in length, and have 5 ribs.
Ecological Threat
Mirabilis nyctaginea prefers disturbed areas like pastures, roadsides, and abandoned fields. It is thought to be native to all U.S. states except Alaska, Hawaii, Georgia, Florida, South Carolina, Oregon, and Arizona.

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s);
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Root(s); Tuber
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John Cardina, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Catherine Herms, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); in flower
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); in flower
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Catherine Herms, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.


Invasive Listing Sources:
Faith Campbell, 1998
Pacific Northwest Exotic Pest Plant Council, 1998