Equisetum hyemale subsp. affine (Engelmann) Calder & Roy L. Taylor
Equisetaceae
Cholewa, A.
1580
1989-05-05
United States, Minnesota, Washington, Carpenter Nature Center. Washington Co., T26N R20W S4...N ravine, ca. 50 m upstream from gorge; adjacent to footbridge;Carpenter Nature Center;026N;20W;04
44.768259 -92.812758 +-816m.
Mixed forest of Acer negundo, Fraxinus pensylvanica, and Quercus, with VItis riparia and Lonicera tatarica