1922] 



PFEIFFER — MONOGRAPH OF THE ISOETACEAE 159 



merged, Lake MacGregor, 3 August, 1917, Bro. Rolland 

 6284 (N. Y. Bot. Gard. Herb.); Kirck's Ferry, 16 August, 

 1916, Bro. Rolland 65 (Mo. Bot. Gard. Herb.); Richelieu 

 River, Isle Allo-None, 13 August, 1918, Bro. Victorin (N. Y. 

 Bot. Gard. Herb.); Lake Pratt Co., Temiscouata, August, 



1914, Bro. Victorin 694 (Mo. Bot. Gard. Herb., U. S. Nat. 

 Herb., and Gray Herb.) ; in 1 ft. water in sandy-bottomed 

 pond, Petit Riviere Coxipi, Brouage, Saguenay Co., 23 July, 



1915, St. John 90059 (Gray Herb.); shallow pool in 

 tundra, Anse Portage, Archipel de St. Augustin, Saguenay 

 Co., 5 August, 1915, St. John 90060 (Gray Herb.) ; 1 ft. of 

 w r ater, hillside pond, Baie des Moutons, Boishebert, Sag- 

 uenay Co., 15 August, 1915, St. John 90058 (Gray Herb.). 



New Brunswick: Lily Lake, St. Johns, 8 August, 1873, Boott 



(Gray Herb.); St. George, Charlotte Co., 17 August, 1883, 

 Vroom (Gray Herb.); muddy pool on shores of St. John 

 River, Connors, Madawaska, 13 July, 1903, Pease 2249 

 (Gray Herb.). 



Nova Scotia: Shelburn, August, 1873, James (Mo. Bot. Gard. 



Herb.) ; South Ingonish, 8 August, 1898, Macoun (Mo. Bot. 

 Gard. Herb.) ; Boylston, August, 1890, Hamilton 81051 in 

 part (Gray Herb.); N. E. Margaree, Cape Breton Isl., 11 

 August, 1906, Robinson 335 (N. Y. Bot. Gard. Herb.); 

 (probably) margin of Taylor's Lake, Sunny Brae, Pictou 

 Co., 30 July, 1913, St. John 1370 (Gray Herb.); muddy 

 lagoon, Charcoal, Valley of the East River, Pictou Co., 2 

 August, 1913, St. John 1371 (Gray Herb.); muddy and 

 rocky bottom of a quiet brook, New Tusket, i) August, 1921, 

 Femald & Long 23113 (Mo. Bot. Gard. Herb.). 



Maine : 



Aroostook Co.: sandy, bottom of Beau Lac, 11 August, 1902, 



Femald (Mo. Bot. Gard. Herb.) ; Beau Lac, 14 August, 



1902, Eggleston 3026 (U. S. Nat. Herb.) ; ledgy margin of 



river, St. Francis, 19 August, 1893, Femald 220 (Mo. Bot. 



Gard. Herb., Gray Herb., N. Y. Bot. Gard. Herb., U. S. 



Nat. Herb., and Univ. Minn. Herb.) ; sandy bed of Petti- 



quaggimas (Glazier) Lake, 8 August, 1893, Femald 218 (Mo. 



Bot. Gard. Herb.) ; gravelly margin of River St. Francis, 



21 



Gard. Herb.. G 



Herb., U. S. Nat. Herb., and Univ. Minn. Herb.) ; logan by 



