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Contact information
For information on Wisconsin's rare plants, contact:
Kevin Doyle
608-416-3377

Violet Bush Clover (Lespedeza violacea)

Life history

Species overview

Violet Bush Clover (Lespedeza violacea), a Wisconsin Special Concern plant, is found in dry forests and woodlands, usually on sandstone bluffs. Blooming occurs late June through late July; fruiting occurs late July through late September. The optimal identification period for this species is early July through early September.

Synonyms: Lespedeza violacea var. prairea, L. frutescens, L. prairea, Hedysarum frutescens, H. violaceum

Identification

  • Distinguishing characteristics: Peduncles of the racemes with pedicels much longer than the subtending leaves; keel 1 to 2 mm longer than the wings; leaflets about twice as long as wide.
  • Flower characteristics: Racemes loose with few flowers; pedicels much exceeding the subtending leaves; flowers purple, 6 to 10 mm, wings shorter than the kee; calyx lobes 1.5 to 3 mm, the 2 uppermost fused beyond the middle.
  • Fruit characteristics: Oval to elliptic, 1-seeded.
  • Leaf characteristics: Leaflets 3, elliptic, each leaflet 1 to 4 cm, half as wide, hairy beneath and smooth or nearly so above; petioles often nearly as long as the leaflets.

Phenology

  • Blooming phenology: late June through late July
  • Fruiting phenology: late July through late September
  • Optimum time to identify: The optimal identification period for this species is early July through early September

Other

  • Growth form: Forb-erect
  • Vegetative reproduction:
  • Life cycle: Perennial
  • Comments: Associated Species: Quercus velutina, Q. alba, Q. borealis, Schizachyrium scoparium, Carex richardsonii, Rhus glabra, Juglans cinerea, Carya ovata.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - state and federal - and the rank (S and G Ranks) for Violet Bush Clover (Lespedeza violacea). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where this species has been found to date and is not meant as a range map.

Documented locations of Lespedeza violacea in the Natural Heritage Inventory Database as of July 2015.


Summary Information
State StatusSC
Federal Status in Wisconsinnone
State RankS2
Global RankG5
Tracked by NHIY

Habitats and landscapes

The Natural Heritage Inventory has developed scores indicating the degree to which each of Wisconsin's rare plant species is associated with a particular natural community or ecological landscape. This information is similar to that found in the Wildlife Action Plan for animals. As this is a work in progress, we welcome your suggestions and feedback.

General habitat information

  • Habitat description: Found in dry forests and woodlands, usually on sandstone bluffs.
  • Soils: Dry, sandy soils.

Natural communities

This table lists the natural communities that are associated with Violet Bush Clover. Scores for natural community associations are: "significant" association (score=3), "moderate association" (score=2) or the species can be present but is only weakly associated with the community (score=1).

Ecological landscapes

This table lists the ecological landscape association scores for Violet Bush Clover. The scores (3=High, 2=Moderate, 1=Low, 0=None) also correspond to the map.

Map of the Ecological Landscapes of Wisconsin.

Species guidance

The Endangered Resources Program has developed avoidance measures and management guidelines for plants on the Natural Heritage Working List. These are a work in progress, and we welcome your suggestions and feedback. Sources used in developing this information can be found here.

Avoidance measures

These are specific actions designed to avoid "take" (mortality) of this species.

  • Avoid broadcast spraying of herbicides; use care with spot spraying.
  • Avoid known individual plant locations and conduct operations elsewhere when they are least likely to cause damage. Ideally, this would involve frozen, snow-covered ground. However, in areas of the state where frozen conditions are unreliable, very dry soils late in the growing season might be the best available alternative. Consult with a biologist, if needed.
  • Avoid locating landings, staging areas, or access routes in open sandy areas dominated by native grasses.

Management guidance

Management guidelines are additional considerations that may help maintain or enhance habitat for this species

  • Maintain open to partially open canopy to encourage this species. Avoid closed canopy conditions.
  • Prescribed burns and/or brushing may be beneficial (dependent on local site conditions).
  • Survey for and control invasive plants prior to conducting timber operations, as these can be spread by vehicles and often respond vigorously to increased light; see forestry BMPs for invasive species.

Photos


Violet Bush Clover  Photo.

Photo by Scott Weber, Wisconsin DNR.


Support for Wisconsin's rare plant information has been provided by the Division of Forestry, the Endangered Resources Fund and the Wisconsin Rare Plant Preservation Fund. To donate, visit the Natural Resources Foundation of Wisconsin [exit DNR].

Last revised: Friday, August 10, 2018
Southwest Savanna Southern Lake Michigan Coastal Western Coulees and Ridges Southeast Glacial Plains Central Sand Hills Central Lake Michigan Coastal Central Sand Plains Northern Lake Michigan Coastal Northern Lake Michigan Coastal Northeast Sands Western Prairie North Central Forest Northern Highlands Northwest Lowlands Northwest Sands Northwest Lowlands Superior Coastal Plains Forest Transition