1916] St. John, — Potamogeton, Section Coleophylli 127 



and 26,828) ; Sarnia Bay, Lambton County, July 7, 1896, C. K. Dodge 

 (C no. 16,468); Pic River, Lake Superior, Loring (H). Ohio: Day- 

 ton, July 1883, A. F. Foerste (Y); Indiana: Lake Maxinkickee, July 

 21, 1899, A. W. Everman (R); Wolf Lake, Sept. 3, 1900, Agnes Chase, 

 no. 1,460 (A & H). Michigan: shallow water, Algonac, July 29, 

 1901, J. H. IShuette (H); in water, Stony Island, Huron County, 

 July 13, 1908, C. K. Dodge, no. 5 (H) ; Isle Royale, Sept. 2, 1910, 

 W. 8. Cooper, no. 311 (H); millpond, Alma, Aug. 30, 1893, Chas. A. 

 Davis (H); Pine Lake near Michigan Agricultural College, July, L895, 

 C. F. Wheeler (H). Wisconsin: Milwaukee, /. A. Lapham (H); 

 shallow water on sandy bottom of lake, and muddy bottom of lakes, 

 and running water, and sandy bottom of deep water lakes, Madison, 

 T. J. Hale (A & Y); Duck Creek, Green Bay, June and Aug., 1878, 

 X //. Shuette (H); Green Bay, Sept., 1882, J. II. Shurtte (H). Illi- 

 nois: Cedar Lake, Lake Villa, Aug. 8, 1906, //. A. (Jleason & F. D. 

 Shobe, no. 185 (H). Minnesota: Aug., 1889, J. M. Holzinger (R); 

 Grand Lake, Stearn County, July, 1896, Jennie E. Campbell (R); 

 Swan Lake, Nicollet County, July, 1892, C. A. Ballard (II). Iowa: 

 Armstrong, July 29, 1897, R. I. Crafty (H.) North Dakota: im- 

 mersed in ponds, Leeds, July, 1899, J. Lunell, no. 36 (H); Wahalla, 

 Aug. 18, 1902, L. R. Waldron, no. 1,643 (R); Lake Irvine, Maza, 

 July 27, 1900, J. Kildahl (R). South Dakota: Lake Campbell, 

 July 4, 1893, T. A. Williams (H & R); Sioux River, Brookings, 

 July 4, 1894, J. T. Thornber (H); Bigstone, Aug. 24, 1892, T. A. 

 Williams (H & R) ; Lake Hendricks, Aug. 8, 1894, Griffiths & Schlosser, 

 no. 16 (R); Gettysburg, 1892, Griffiths & Schlosser (R), Nebraska: 

 in East Cody's Lake, at the head of Dismal River, Aug. 9, 1S93, 

 P. A. Rydberg, no. 1,659 (H); in Dismal River, south of Thedford, 

 Thomas County, June 27, 1893, P. A. Rydberg, no. 1,439 (H); Wood 

 Lake, Aug. 13, 1898, J. M. Bates (H). Texas: Knickerbocker 

 Ranch, Dove Creek, Tom Green County, May, 1880, Frank Tweedy 

 (Y); Wright (H). Saskatchewan: Cumberland House, 1825, 

 Drummond (H); still and slow flowing water, Bullrush (Reed) Lake, 

 July 25, 1879, J. Maeoun (C no. 4,147); Bullrush Lake, July 26, 1880, 

 J. Maeoun, no. 170 (H); in a pool on the prairie, Frenchman's River, 

 June 19, 1895, J. Maeoun (C no. 16,466); in ponds and lakes, south 

 of Battleford, Aug. 3, 1879, J. Maeoun (C no. 3,018); in water, Moose 

 Mountain Creek, July 8, 1884, J. M. Maeoun (C no. 4,148); pools, 

 Moose Jaw, June 20, 1894, ,/. Maeoun (C no. 16,467); Ribstone 

 Creek, Aug. 14, 1906, ./. Maeoun & W. Herriot (C no. 76,873); 23 

 miles east of Saskatoon, July 23, 1906, »/• Maeoun & W. Herriot 

 (C no. 76,874). Montana: Great Falls, Sept. 8, 1885, and Sept. 6, 

 1885, R. S. Williams, nos. 284 and 286 (Y) ; Bitterroot Valley near 

 Frenchtown, Aug. 4, 1880, 8. Watson, no. 394 (H). Wyoming: 

 Bath Lake, Sept. 8, 1896, A. Nelson, no. 2,781 (H&R); Laramie 

 River, Aug. 10, 1895, A. Nelson, no. 1,668 (H); Laramie River, 

 July 15, 1895, E. Nelson, nos. 3,387 and 3,387a (R); rolling plains 



