[Vol. 9 



168 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



1894, Smith (Mo. Bot. Gard. Herb.); from a canal in So. 

 Natick, water about 1 ft. deep, 25 June, 1879, Morong (N. 

 Y. Bot. Gard. Herb, and Mo. Bot. Gard. Herb.) ; entirely 

 submerged, Charles R., So. Natick, 4 August, 1879, Morong 

 (N. Y. Bot. Gard. Herb.). 

 Norfolk Co.: Neponset River, Readville, 28 July, 1S70, 



Boott (N. Y. Bot. Gard. Herb.); Highland Lake, Norfolk, 

 1 August, 1909, Ware 724 (Mo. Bot. Gard. Herb.); Ham- 

 mond's Pond, Brookline, C. E. & W. Faxon 8 (Gray Herb.) ; 



Lake Massapoag, 17 October, 1897, Greenman 2314 (Mo. 

 Bot. Gard. Herb.) ; Dedham, growing in shallow water, mud 

 bottom, 24 July, 1902, Forbes (Gray Herb.); Lake Massa- 

 poag, 11 September, 1903, Eaton ( 



Gard. Herb 



ham, 



ok, at its junction with Charles 

 1885. Fuller (Grav Herb.). 



Bristol Co.: Mulberry Brook, Easton, 16 August, 1903, Eaton 



(Mo. Bot. Gard. Herb.); Flyaway Pond, No. Easton, 15 

 July, 1903, Eaton (Mo. Bot. Gard. Herb.); Canoe River, 2 

 August, 1903, Eaton (Mo. Bot. Gard. Herb.); Watson's 

 Pond, Taunton, 12 July, 1903, Eaton (Mo. Bot, Gard. 

 Herb.); few stations in stream, Swansea, 16 August, 1912, 



Sanford 38 (Gray Herb.). 

 Worcester Co.: Massapoag Lake, 11 September, 1903, Eaton 



(Mo. Bot. Gard. Herb.); Uxbridge, 30 August, 1864, Rob- 

 bins (Mo. Bot. Gard. Herb, and Gray Herb.) ; "river," Ux- 

 bridge;, 1 August, 1867, Robbins (N. Y. Bot. Gard. Herb.); 

 pond, Grafton, 27 July, 1866, Robbins (Mo. Bot. Gard. Herb, 

 and N. Y. Bot. Gard. Herb.); pond connected with Black- 

 stone River, 30 August, 1864, Robbins (Mo. Bot. Gard. 

 Herb.); Uxbridge, 1845, Robbins (Mo. Bot. Gard. Herb.); 

 Uxbridge, without date, ex. herb. Robbins (N. Y. Bot. Gard. 



Herb.); millpond, depth of 2-3 ft., Uxbridge, 30 Au 



1866, Robbins (Mo. Bot. Gard. Herb.); Cohasset Brook, 

 Southbridge, alt. 640 ft., 12 August, 1899, Harper (N. Y. 

 Bot. Gard. Herb.) ; rocky bottom of Quenebang River, Stur- 

 bridge, alt. 540 ft., 23 July, 1899, Harper (Gray Herb.) ; Ux- 

 bridge, 31 August, 1907, Eaton (Mo. Bot. Gard. Herb.). 



Franklin Co.: Ashfield Pond, Ashfield, 18 July, 1909, Williams 



(Gray Herb.). 



Berkshire Co.: Lake Undine, Mt. Everett, 1 October, 1897, N. 



