1916] St. John,— Potamogeton, Section Coleophylli 137 



course leaves 0.75-2 mm. broad and sometimes apiculate at tip. — 

 Still or flowing waters, Magdalen Islands, Quebec and Prince Edward 

 Island and from northern Ontario to Saskatchewan, South Dakota 

 and California. 



Magdalen Islands: brook in a springy marsh, Grindstone, Grind- 

 stone Island, July 17, 1912, M. L. Fernald, E. B. Bartram, B. Long & 

 II. St. John, no. 0,792 (H); shallow pools and slow brooks in a larch 

 swamp, Grindstone, Grindstone Island, Aug. 13 & 14, 1912, M. L. 

 Fernald, B. Long & II. St. John, nos. 6,785 and 6,786 (H). Prince 

 Edward Island: water, North Pond, near East Point, Aug. 15, 1888, 

 J. Macoun (C no. 4,373a); North Pond, Aug. 15, 1888, J. Macoun 

 (C no. 4,373). Ontario: The Beacon, Mouth of the Moose River, 

 James Pay, July 19, 1904, W. Sprcadborough (C no. (52,664). Mani- 

 toba: four miles east of Eorest, June 19, 1906, J. Macoun <(• IV. Hcr- 

 riot (C no. 76,875); six miles east of Forest, June 19, 1906, ./. Macoun 

 A- W. Herriot (C no. 76,876). South Dakota: Rapid Creek below 

 Pactola, 4,400 feet altitude, Black Hills National Eorest, July 14, 

 1910, J. Murdoch Jr., no. 4,250 (H); Black Hills, 1887, Dr. W. II. 

 For wood (H). Saskatchewan: in salt marshes, Old Wives Lake, 

 July 23, 1880, J. Macoun (C no. 3,008); west of Yorkton, July 7, 

 190*6, J. Macoun &\V. Herriot (C no. 76,878) ; Moose Mountain Creek, 

 July 1, 1S83, J. M. Macoun (C no. 3,016). Alberta: still or slow 

 flowing water, south of the Hand Hills, Aug. 22, 1879, J. Macoun (C no. 

 3,009); Vermilion Lakes, Banff, Aug. 13, 1891, J. Macoun (C no. 

 4,374a); Vermilion Lakes, Banff, July 15, 1891, ./. Macoun (C no. 

 4,37(5). Montana: ditches, Belgrade, Bozeman, Aug. 19, 1905, 

 ./. II'. Blankinship, no. 572 (A). Idaho: in a slough, Henry's Lake, 

 Fremont County, Sept. 1, 1899, A. Nelson & E. Nelson, no. 6,808 (H). 

 Wyoming: flowing water, Norwood Creek, Big Horn County, Aug. 9, 

 1901, L. N. Gooding, no. 50S (H); Granger Ham's Fork, July 30, 1897, 

 A. Nelson 4,142 (H&R); Evanston, July 10, 1897, T. A. Williams 

 (H & R) ; shallow ponds, Jackamore Creek, 50 miles north of Point of 

 Rocks, E. I). Merrill & K. N. Wilcox, no. 608 (H & R); in a woodland 

 pool, Snake River, Aug. 12, 1S99, A. Nelson & E. Nelson, no. 6,483 (R); 

 in a slough, Henry's Lake, Fremont County, Sept. 1, 1899, A. Nelson & 

 K. Nelson, no. 6,808 (R); in streams, Dayton, 4,000 feet altitude, 

 Sheridan County, Sept., 1899, Frank Tweedy, no. 2,259 (Y); Fort 

 Bridger, Aug. 6,' 1873, T. C. Porter (A); Sour Creek, 8,200 feet alti- 

 tude, Yellowstone Park, Sept., 1885, Frank Tweed}/ (Y); Shoshone 

 Creek, Geyser Basin, Yellowstone Park, Aug. 22, 1878, C. Richardson 

 (H); in a woodland pool Snake River, Yellowstone Park, Aug. 12, 

 1899, .1. Nelson & E. Nelson, no. 6,483 (H). Colorado: in Tomichi 

 River, Parlin, 8,000 feet, Gunnison County, Aug. 20, 1901, B. II. 

 Smith (A). Utah: Fish Lake, 9,000 feet altitude, Aug. 9, 1894, 

 M. E. Jones, no. 5,782 (R). Nevada: Ruby Lake, 6,000 feet alti- 

 tude, 1868, 8. Watson, no. 1,140 (Y). California: Leavitt's Mead- 

 ows, Bridgeport and Sonora Road, Mono County, Aug. 22, 1898, 

 J. W. Congdon, no. 99.14 (H). 



