Equisetum hyemale subsp. affine (Engelmann) Calder & Roy L. Taylor
Equisetaceae
Smith, Welby
1550
1979-08-22
United States, Minnesota, Clay, Clay County...T139N R46W, NW1/4 sec.15. Buffalo River State Park. 7.5 mi W-SW of Hawley;Buffalo River State Park;139N;46W;15
46.851485 -96.478211 +-474m.
In mesic prairie. Site dominated by Andropogon gerardi and Sorghastrum nutans. Assoc. with Apocynum sibiricum, Aster ericoides, Astragalus canadensis, Bromus inermis, Galium boreale etc.