PROTECTING WISCONSIN'S BIODIVERSITY

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

Great Indian-plantain (Arnoglossum reniforme)

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Photo by Abbie Meyer

 

Counties with Mapped NHI Occurrences

Great Indian-plantain (Arnoglossum reniforme), a Wisconsin Special Concern plant, is found in dry-mesic and mesic hardwood forests and adjacent mesic prairies, often with dolomite near the surface. Blooming occurs late-June through late-July, fruiting late-July through late-August. The optimal identification period for this species is early-June through late-September.

Cacalia muhlenbergii, Mesadenia reniformis, Senecio atriplicifolius var. reniformis

 
 
 

Great Indian-plantain is an erect forb 1-3m tall, with a grooved stem with 6-8 angles and many short, broad, flat-topped flower heads, each with 5 narrowly cylindrical flowers. Fruits are dark brown to purple cypselae (achene surrounded by calyx sheath), 4-5mm, that taper toward one or both ends. Leaves are irregularly toothed, green on both sides, and palmately veined. The lower leaves are very large, up to 80cm wide, kidney-shaped, with long petioles. The upper leaves are smaller and fan-shaped or oval.

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

Perennial. The optimal identification period for this species is early-June through late-September.

Associated species include Acer saccharum, Ostyra virginiana, Tilia americana, Ulmus americana, Quercus rubra, Arisaema triphyllum, Juglans cinerea, Asarum canadense, Laportea canadensis, Adiantum pedatum, and Solidago flexicaulis.

Great Indian-plantain is found in southern dry-mesic, mesic, and wet-mesic hardwood forests and adjacent mesic prairies, with rich loamy soils, and often with dolomite near the surface.

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 broadcast spraying of herbicides and use care with spot spraying.

Avoid rapid and dramatic reductions in canopy cover and, basal area, in wet areas to reduce risk of swamping.

Maintain partial canopy to encourage woodland species, avoid closed-canopy conditions.

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.