Benghal dayflower USDA PLANTS Symbol: COBE2
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Commelina benghalensis L.

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Taxonomic Rank: Liliopsida: Commelinales: Commelinaceae
Synonym(s): tropical spiderwort, jio
Native Range: tropical Asia (BAIL);

Benghal dayflower, or tropical spiderwort, is an annual or perennial, creeping herb that is on the Federal Noxious Weed List. Leaves are alternate, lily-like, 1.2-2.8 in. (3-7 cm) long and often have reddish hairs towards the tip. Aboveground flowers are very small with relatively large lilac to blue petals and are present from the spring into the fall. Underground flowers, which grow on burrowing rhizomes, are white and very small. Benghal dayflower invades areas with moist soil including roadsides, grasslands and other disturbed areas. It is especially problematic in pastures and crop fields where it forms dense, pure stands that can smother other plants such as low-growing crops. Benghal dayflower is native to Asia and Africa and was first found in the United States in 1963.

Identification, Biology, Control and Management Resources

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


Feature(s); The underground flowers appear as swollen nodes. Thomas County, GA
Byron Rhodes, University of Georgia, Bugwood.org
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Flower(s); Thomas County, GA
Byron Rhodes, University of Georgia, Bugwood.org
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Infestation;
Byron Rhodes, University of Georgia, Bugwood.org
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Feature(s); The underground flowers appear as swollen nodes. Thomas County, GA
Byron Rhodes, University of Georgia, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Aerial flower
Herb Pilcher, USDA Agricultural Research Service, Bugwood.org
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Flower(s); Double flower in profile
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Feature(s); Red hairs on leaf sheath
Herb Pilcher, USDA Agricultural Research Service, Bugwood.org
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Seedling(s);
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Infestation; Infestation in harvested cotton field. Cairo, Georgia. 2001
Stanley Culpepper, University of Georgia, Bugwood.org
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Foliage; Close-up of foliage
Stanley Culpepper, University of Georgia, Bugwood.org
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Infestation; Large infestation in cotton field
Stanley Culpepper, University of Georgia, Bugwood.org
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Infestation; Infestation in cotton field. Grady county, Georgia. 2002
Stanley Culpepper, University of Georgia, Bugwood.org
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Infestation; Large infestation
Stanley Culpepper, University of Georgia, Bugwood.org
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Seedling(s);
Stanley Culpepper, University of Georgia, Bugwood.org
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Infestation; in peanut 6 weeks into the season
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Infestation; Bengal dayflower with peanut in lower right corner
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Infestation; close up of Bengal dayflower in cotton
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Seed(s); seed recovered from gut contents of dove
Theodore Webster, USDA Agricultural Research Service, Bugwood.org
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Infestation; Peanuts infested with Bengal dayflower (2 wks after planting)
Theodore Webster, USDA Agricultural Research Service, 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.

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Invasive Listing Sources:
Alabama Invasive Plant Council
Georgia Exotic Pest Plant Council
South Carolina Exotic Pest Plant Council