Carex collinsii, common name Collins' sedge, is a species of Carex native to North America. It is listed as a special concern species and believed extirpated in Connecticut."Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved November 21, 2017. It is listed as endangered in New York, as threatened in Pennsylvania, and its historical range included Rhode Island.
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