Japanese dodder USDA PLANTS Symbol: CUJA
U.S. Nativity: Exotic
Habit: Vines Forbs/Herbs
Cuscuta japonica Choisy

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Taxonomic Rank: Magnoliopsida: Solanales: Cuscutaceae

Appearance
Cuscuta japonica is an annual, parasitic vine that has recently been introduced into the United States. It is listed as a Federal Noxious Weed.
Foliage
The many-branching stems are fleshy, circular, and pale yellow with red spots and striations. Leaves are minute and scale-like.
Flowers
Flowers are abundant, pale yellow, and sessile.
Fruit
Fruits are capsules that are ovoid and 0.2 in. (5 mm) in diameter. The seeds are brown and grouped with 1 to 3 seeds per capsule.
Ecological Threat
Many species of dodder, some native and some exotic, occur in the United States. Cuscuta japonica parasitizes host plants by penetrating the vascular tissue of the host with structures called haustoria. Severe infestations can kill host plants. It is native to Asia and several infestations have recently been found in Texas, Florida, and South Carolina.

Identification, Biology, Control and Management Resources

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


Infestation;
Kim Camilli, Texas A&M Forest Service , Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Kim Camilli, Texas A&M Forest Service , Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Kim Camilli, Texas A&M Forest Service , Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Kim Camilli, Texas A&M Forest Service , Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Kim Camilli, Texas A&M Forest Service , Bugwood.org
Additional Resolutions & Image Usage

Control; Removing an infested tree
Victor Cordova, City of Houston, Urban Forestry Division, Bugwood.org
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Infestation; Severe infestation
Victor Cordova, City of Houston, Urban Forestry Division, Bugwood.org
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Feature(s);
Barry Rice, sarracenia.com, Bugwood.org
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Feature(s);
Barry Rice, sarracenia.com, Bugwood.org
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Feature(s);
Barry Rice, sarracenia.com, Bugwood.org
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Seed(s); Seeds. FNW taxon.
Julia Scher, USDA APHIS PPQ, Bugwood.org
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Seed(s); Close-up of hilum. FNW taxon.
Julia Scher, USDA APHIS PPQ, Bugwood.org
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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:
South Carolina Exotic Pest Plant Council