PROTECTING WISCONSIN'S BIODIVERSITY

 
 
   
 
Scientific Name Common Name Global Rank State Rank Federal Status WI Status

Small-flowered Woolly Bean (Strophostyles leiosperma)

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Photo by Kitty Kohout

 

Counties with Mapped NHI Occurrences

Small-flowered Woolly Bean (Strophostyles leiosperma), a Wisconsin Special Concern plant, is found in dry, sandy soil, as well as margins of upland woods, dunes, and shores. Blooming occurs from July through mid-September, fruiting early-August through October. The optimal identification period for this species is July through October.

 
 
 

Small-flowered woolly bean has pink-purple to white flowers that are 5-8 mm. Its fruit are 2-4cm pods, spreading hairy. Seeds are 2.5-3mm and the hair is easily detatched. Leaflets are oblong or lanceolate, 3-5cm, pilose on both sides, more densely so beneath, with stiff hairs 1-2mm.

Blooming occurs from July to mid-September, fruiting early-August through October.

Annual. The optimal identification period for this species is July through October.

Associated species include Selaginella rupestris, Hieracium longipilum, Tradescantia, Asclepias verticillata, and Panicum virgatum.

Small-flowered woolly bean is found in dry, sandy soil, as well as margins of upland woods, dunes and shores.

Avoid broadcast spraying of herbicides and use care with spot spraying.

Because this plant is an annual, work may safely be conducted before the plants emerge or after they have developed mature seeds.

Avoid disturbance to shorelines and the forest-beach interface.

Prescribed burns and/or brushing may be beneficial, dependent on local site conditions and burn frequency. Rotational burns with annual unburned refugia may be preferred.

Maintain and restore open habitat through selective clearing and brushing.

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.

Species of Greatest Conservation Need (SGCN) are associated with habitats (or natural communities) and places on the landscape. Understanding relationships among SGCN, natural communities and ecological landscapes help us make decisions about issues affecting SGCN and their habitat and how to respond. Download the Wildlife Action Plan association score spreadsheet to explore rare species, natural communities and ecological landscape associations

Conservation actions respond to issues or threats, which adversely affect species of greatest conservation need (SGCN) or their habitats. Besides actions such as restoring wetlands or planting resilient tree species in northern communities, research, surveys and monitoring are also among conservation actions described in the Wisconsin Wildlife Action Plan because lack of information can threaten our ability to successfully preserve and care for natural resources.