PROTECTING WISCONSIN'S BIODIVERSITY

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

Russet Cotton-grass (Eriophorum russeolum ssp. leiocarpum)

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Photo by Emmet Judziewicz

 

Counties with Mapped NHI Occurrences

Russet Cotton-grass (Eriophorum russeolum ssp. leiocarpum), a Wisconsin Special Concern plant, is found on very wet bog and fen mats, often on the upslope side of an embankment. Blooming occurs throughout June, fruiting throughout July. The optimal identification period for this species is early-June through July.

Eriophorum altaicum var. neogaeum, Eriophorum chamissonis var. chamissonis, Eriophorum chamissonis, Eriophorum chamissonis var. albidum, Eriophorum russeolum var. albidum

 
 
 

Russet cotton-grass is a graminoid with single spikelets that are erect at end of stems and clustered in a roughly round head 2-3 cm wide. Flower scales are narrowly ovate, black-green, with broad white margins and tips, bristles are white to bright red-brown. Its dark brown achenes are oblong-obovate, 2-2.7mm, one third as wide, and distinctly apiculate. It has few leaves, mostly near the base, narrow, channeled, or triangular blades, 1-2mm wide. The uppermost leaves are from near middle of stem and often without blades.

Rhizomatous. Blooming occurs throughout June, fruiting throughout July.

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

Associated species include Eriophorum angustifolium, E virginicum, Vaccinium oxycoccos, Glyceria borealis, Juncus effusus, Calla palustris, Carex canescens, C lasiocarpa, Larix laricina, Picea mariana, and Sphagnum species.

Russet cotton-grass is found on very wet bog and fen mats, often on the upslope side of an embankment.

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.

Minimize disturbance to hydrology, including soil disturbance from rutting.

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

This species is likely sensitive to water quality. Following BMPs around streams and buffering associated drainages will reduce eutrophication and prevent water quality degradation.

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.