1922] 



PFEIFFER MONOGRAPH OF THE ISOETACEAE 169 



L. Britton (N. Y. Bot. Gard. Herb.) ; same station and date, 

 E. G. Britton (N. Y. Bot. Gard. Herb.) ; Spectacle Pond, 

 Sandisfield, 29 June, 1912, Hoffman (Gray Herb.) ; Lake Un- 

 dine, The Dome, Sheffield, 27 August, 1902, Hoffman (Gray 

 Herb.). 



Massachusetts, but not located on map: "Country Pond," 18 

 August, 1896, Eaton 441 (Mo. Bot. Gard. Herb.) ; "Kenoza 

 Lake," 12 September, 1897, Eaton 913 (Mo. Bot. Gard. 

 Herb.); Pinkapog Pond, 27 August, 18G9, Boott (N. Y. 

 Bot. Gard. Herb.). 



Connecticut: Greystone, 30 August, 1907, Eaton (Mo. Bot. Gard. 

 Herb.) ; upper end Selden's Creek, 5 August, 1905, Graves 

 142 (Mo. Bot. Gard. Herb.); Mashapang Pond, Union, 

 20-25 August, 1902, Bissell (Mo. Bot. Gard. Herb.) ; Lyme, 

 13 August, 1900, Graves (Mo. Bot. Gard. Herb.) ; Selden's 

 Cove, Lyme, 29 August, 1901, Bissell (Gray Herb.) ; 

 Selden's Cove, Lyme, 29 August, 1901, Graves (Mo. Bot. 

 Gard. Herb.); submerged on sandy bottom, Selden's Cove, 

 Lyme, 11 September, 1902, Graves 1 (Gray Herb.) ; W. Gosh- 

 en, July, 1891, Underwood (Mo. Bot. Gard. Herb, and Gray 

 Herb.) Great Brook near Poquonnock, "Lake Marshapog, 

 Litchfield," 1882, Underwood (Mo. Bot. Gard. Herb.) ; shal- 

 low water of pond at Graystone, Plymouth, 6 September, 

 1903, Bissell (in part) (Gray Herb.) ; Graystone, 30 August, 

 1907, Eaton (Mo. Bot. Gard. Herb.). 



New York: Niagara River, below Buffalo, 3i September, 1866, 

 Clinton (Mo. Bot. Gard. Herb, and Gray Herb.); Niagara 

 River, September, 1866, Clinton (Gray Herb, and N. Y. Bot. 

 Gard. Herb.) ; Oneida Lake, Gilbert (Mo. Bot. Gard. Herb.) ; 

 Niagara River, below Buffalo, 1865, Clinton (N. Y. Bot. 

 Gard. Herb.); at outlet of Lake Luzerne, Warren Co., 24 

 August, 1867, Clinton (Mo. Bot. Gard. Herb.) ; lake on Cats- 

 kill Mts., July, 1868, Canby (Mo. Bot. Gard. Herb.) ; lakelet, 

 Catskill Mts., 19 September, 1866, Clinton (Mo. Bot. Gard. 

 Herb, and Gray Herb.) ; west of Lake George, shallow pool, 

 20 July, 1862, Les Lesquereux (Mo. Bot. Gard. Herb.) ; Niag- 

 ara River, 2 September, 1862, Clinton (Mo. Bot. Gard. 

 Herb.) ; submerged banks, Oneida Lake, 20 July, 1879, Paine 

 (Mo. Bot. Gard. Herb.) ; Greenwood Lake, Orange Co., 15 



