hoary alyssum USDA PLANTS Symbol: BEIN2
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Berteroa incana (L.) DC

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Taxonomic Rank: Magnoliopsida: Capparales: Brassicaceae
Synonym(s): hoary false madwort, hoary alyssum, hoary false alyssum
Native Range: Europe (BAIL);

Appearance
Berteroa incana is an annual, biennial, or perennial in the mustard family growing 1-3 ft. (0.3-0.9 m) tall.
Foliage
Stems are gray-green and hairy with many branches near the top. Alternate leaves are gray-green, hairy, alternate, oblong, narrow, 0.5-3 in. (1.3-7.6 cm) long, with smooth edges.
Flowers
White flowers with 4 deeply divided petals are produced in long raceme.
Fruit
Seed pods are hairy, swollen, and oblong with short beaks on the end. Oblong seeds are rough, dull gray-brown. It reproduces and spreads by seeds.
Ecological Threat
Spreads rapidly due to the high number of seeds per plant. The plant emerges early in spring and continues to flower and produce seed until frost. It can cause toxicity to horses.

Identification, Biology, Control and Management Resources

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


Plant(s); Many plants
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Infestation; Large patch
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); photo taken 3 July 1994
Catherine Herms, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); photo taken 3 July 1994
Catherine Herms, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Flowers
John M. Randall, The Nature Conservancy, 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.

U.S. National Parks where reported invasive:
Rocky Mountains National Park (Colorado)
Yellowstone National Park (Wyoming)



Invasive Listing Sources:
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007