Xanthium strumarium var. canadense (Mill.) Torr. & A.Gray
Asteraceae
N. H. Holmgren
12242
1994-09-08 - 1994-01-25
08 Sep 1994
United States of America, Utah, Wasatch Co., Heber Valley, where the Provo River enters Deer Creek Reservoir, Utah Highway 113, 2.6 km (1.6 mi) north of junction with U.S. Highway 189, 5.5 km (3.5 mi) air distance southwest of downtown Heber