1922] 



PFEIFFER — MONOGRAPH OF THE ISOETACEAE 161 



north of Long Pond, Seal Harbor, 21 August, 1889, Rand 

 (Gray Herb.) ; brook, Long Pond Meadows, Seal Harbor, 21 

 August, 1889, Redjield 2530 (Mo. Bot. Gard. Herb, and 

 Gray Herb.) ; muddy pond, Long Pond meadows, 9 Sep- 

 tember, 1899, Rand (Gray Herb.). 



Piscataquis Co.: Milo, 2 September, 1897, Fernald (Mo. Bot. 



Gard. Herb, and Gray Herb.) ; Mt. Katahdin, September, 

 1898, Merrill 1408 (U. S. Nat, Herb.) ; mostly submerged, 

 Three Ponds, Mt. Katahdin, alt. 1500-1800 ft., September, 

 1898, Merrill (N. Y. Bot. Gard. Herb.) ; Mt. Katahdin, 15-30 

 August, 1902, Cowles & Harvey 2 (Mo. Bot. Gard. Herb.) ; 

 muddy river bottom, Dover, 27 August, 1894, Fernald (Gray 

 Herb.) ; gravelly margin of river, Dover, 3 September, 1894, 

 Fernald (Gray Herb.) ; submerged margin of Pleasant 

 River, Brownville, 3 August, 1904, Parlin 1753 (Gray Herb.). 



Somerset Co.: Lake George, Skowhegan, 30 June and 2 July, 



1903, Eaton (Mo. Bot. Gard. Herb.) ; Dead River, 15 August, 



1890, Eaton (Mo. Bot. Gard. Herb.); quiet pool in river, 

 Dead River, 15 August, 1890, Feniald (Gray Herb.). 



Waldo Co.: deadwaters of the stream, Frankfort, 21 July, 1916, 



Fernald & Long 12338 (Gray Herb, and Mo. Bot. Gard. 

 Herb.). 



Knox Co.: Chickawaukie Pond, Rockland, Fernald 1214 (Gray 



Herb.). 

 Lincoln Co. : muddy shore, Pomaquid River, in about 6 in. water, 



Bremen, 27 August, 1899, Chamberlain (Gray Herb.). 

 Kennebec Co.: cold spring-pool in margin of brook, Sydney, 18 



August, 1916, Fernald & Long 12339 (Gray Herb.) ; river 

 margin, in mud, Waterville, 2 September, 1898, Fernald 

 2824 (Gray Herb.); Cobbossee Contee Lake, Winthrop, 

 August, 1898, Battey (Gray Herb.); Winthrop, 28 August, 

 1898, Battey (Gray Herb.). 



Sagadahoc Co. : tidal mud flats of the river, Bowdoinham, 14-19 



September, 1916, Fernald & Long 12342 (Gray Herb, and 

 Mo. Bot. Gard. Herb.) ; border of salt marsh, Back River 

 Creek, Woolwich, 15 September, 1910, Fernald & Long 



12343 (Gray Herb.). 



Franklin Co.: Bay Pond north of Bullhorse Pond, south end 



Great Pond, Industry, 14 August, 1894, Fernald (Mo. Bot. 

 Gard. Herb, and Gray Herb.) ; cold spring entering North- 



