- East side of Hwy M-95, about 120 m south of Marquette Co. line opposite intersection with small gravel road.1
- Edge of coniferous woods, ca. 11 mi. NE of Ralph.1
- Growing along Co. Rd. 396. NW1/4 Sec 24 T40N-R29W1
- Lake Antoine1
- Lake Antoine, Sta. No. 31 T40N, R30W1
- N of Browning Lake, ca. 2 1/2 mi. NW of Merriman1
- NE10, T42N, R29W 8 Mi. E. of Sagola1
- NW10, T42N, R29W 8 mi E. of Sagola1
- NW2,T42N,R29W 8 mi east of Sagola1
- Near Hardwood1
- Near Hylas1
- Near Iron Mountain, Michigan1
- Near Lake 29, about 9 miles NE of Iron Mountain1
- Near Norway.1
- Near Sturgeon River1
- On US-8 at Wisconsin state line (Menominee River), 1 mi. S. of Norway, Profusely abundant, with L. minor and Spirodela polyrhiza in pond at roadside.1
- Project ELF, North of O'Neil Lake Road - South of Schwartz Cr.1
- Project ELF, ¼ mi. N. of Sturgeon River Branch.1
- Quinnesec1
- S1/2 Sec. 31 T41N-R29W. ca. 7 mi. NE Iron Mountain1