French broom USDA PLANTS Symbol: GEMO2
U.S. Nativity: Exotic
Habit: Shrub or Subshrub
Genista monspessulana (L.) L. Johnson

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Taxonomic Rank: Magnoliopsida: Fabales: Fabaceae (Leguminosae)
Synonym(s): Cape broom, Montpellier broom
Native Range: Africa, temp. Asia, Europe (GRIN);

Appearance
Genista monspessulana is a perennial leafy leguminous shrub that grows up to 9.8 ft. (3 m) tall. The main stem is grey and hairless.
Foliage
Leaves are alternate, three-foliate and petiolate 0.08-0.16 in. (2-4 mm) long. Leaflets are elliptic to obovate, often with a short point.
Flowers
Flowers are pedicellate and arranged in a series of lateral racemes of 3 to 7 flowers on indeterminate axillary branches. Pedicels are 0.06-0.12 in. (1.5-3 mm). Standard flower is 0.39-0.51 in. (10-13 mm). Flowers in late winter-spring to late summer-autumn.
Fruit
Fruit pods are densely hairy, ovoid to oblong, 0.6-1 in. (1.5-2.5 cm) long, 0.12-0.2 in. (3-5 mm) wide with 3 to 6 seeds released explosively when ripe. Seeds are strophiolate.
Ecological Threat
Genista monspessulana can be found in coastal plains, mountain slopes, riverbanks, road cuts, forest clear-cuts, grassland and open canopy forest on a wide range of soil types. It is native to the Mediterranean region.

Identification, Biology, Control and Management Resources

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


Infestation;
Barry Rice, sarracenia.com, Bugwood.org
Additional Resolutions & Image Usage

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

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

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

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

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

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

Fruit(s);
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:
Redwood National Park (California)
Sequoia and Kings Canyon National Parks (Californina)



Invasive Listing Sources:
California Invasive Plant Council
Faith Campbell, 1998
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Native Plant Society of Oregon, 2008
Pacific Northwest Exotic Pest Plant Council, 1998
Reichard, Sarah. 1994.  Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.