Carex bushii Mack. (section Porocystis) is generally rare in the northeastern United States. It is currently ranked as S3 and special concern in Connecticut, SH from Maine, S1 and endangered in Massachusetts, S3 in New York, and S1 in Vermont.

On 12 July 2018, I discovered a population of Carex bushii in a clayplain old field in West Haven, Rutland County, Vermont. Subsequent surveying of the property revealed 11 subpopulations of this plant, with a total estimated 58 genets with 685 ramets. As recently as Gilman's 2015 ,New Flora of Vermont, this plant was considered state historic in Vermont, with no populations or voucher specimens known after 1964 (Gilman 2015). Since 2015, two populations were discovered in the Champlain Valley by the Vermont Department of Fish & Wildlife: one large population of approximately 50 genets and...

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