PROTECTING WISCONSIN'S BIODIVERSITY

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

Brittle Prickly-pear (Opuntia fragilis)

Opun_frag_002.jpg

 

 

 

 

8740.jpg

Photo by WDNR Staff

 

Counties with Mapped NHI Occurrences

Brittle Prickly-pear (Opuntia fragilis), a Wisconsin Threatened plant, is found in thin, dry soil over rock, as well as sand prairies. Blooming occurs early-June through late-July, fruiting early-July through late-August. This species can be identified year-round.

Cactus fragilis

 
 
 

Brittle prickly-pear is a shrub with yellow to greenish flowers, 4-5cm wide. Its fruits are fleshy and greenish to reddish when young, dry and tan at maturity, inedible, 1.2-1.5cm, seeds are discoid, with an irregular margin. It has strongly barbed spines, 1.2-2.5cm.

Blooming occurs early-June through late-July, fruiting early-July through late-August.

Perennial. This species can be identified year-round.

Associated species include Quercus macrocarpa, Q velutina, Selaginella rupestris, Juniperus virginiana, and Rhus glabra.

Brittle prickly-pear is found in thin, dry soil over rock, as well as sand prairies.

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

Avoid locating landings, staging areas, or access routes in open sandy areas dominated by native grasses.

This species overwinters above ground, meaning that seasonal restrictions like conducting the a project on frozen ground will not result in avoidance. Therefore, known individual plant locations should be avoided year-round. Consult with a biologist, if needed.

Follow BMPs, especially around streams and use care near ravines, steep slopes, cliffs, rock outcrops, etc.

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.

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.