1922] 



PFEIFFER — MONOGRAPH OF THE ISOETACEAE 163 



(Gray Herb.); borders of pond, East Kingston, 6 Oc- 

 tober, 1895, Eaton 699 (Mo. Bot. Gard. Herb, and Univ. 

 Minn. Herb.); "Dismal Pool" near mouth of Saco River, 

 White Mt., 26 August, 1882, E. & C. E. Faxon 10 (Mo. Bot. 



Gard. Herb, and Gray Herb.); Saco Lake, Crawfords, 17 

 July, 1893, E. & C. E. Faxon 4 (Gray Herb.) ; Ammonoosuc 

 Lake, Crawfords, 17 July, 1893, E. & C. E. Faxon 3 (Gray 

 Herb, and N. Y. Bot. Gard. Herb.); submerged flats at 

 Kingston, August, 1896, Eaton (Mo. Bot. Gard. Herb.); 

 early form growing submersed, East Flats, East Kingston, 



28 July, 1896, Dodge (Gray Herb.) ; Flats, East Kingston, 28 

 July, 1896, Eaton (Mo. Bot. Gard. Herb.); Epping, Eaton 

 481 (Mo. Bot. Gard. Herb.) ; Epping, 12 August, 1896, Eaton 

 425a (Mo. Bot. Gard. Herb.) ; West Epping, Eaton 482b 

 (Mo. Bot, Gard. Herb.); Pautuckaway Pond, Nottingham, 



29 July, 18 6, Eaton 483a (Mo. Bot. Gard. Herb.); East 

 Kingston, 28 July, 1896, Eaton 364 (Mo. Bot. Gard. Herb, 

 and U. S. Nat. Herb.) ; sandy bottoms of ponds, East King- 

 ston, August, 1895, Eaton (N. Y. Bot. Gard. Herb.); East 

 Kingston, 6 July, 1896, Eaton 239 (Mo. Bot. Gard. Herb.); 

 Trickling Falls, East Kingston, 29 July, 1896, Eaton (Mo. 

 Bot. Gard. Herb.); Rod Miller's, Seabrook, Eaton (Mo. Bot. 

 Gard. Herb.); Conway Lake, 25 August, 11)04, Davenport 

 (Mo. Bot. Gard. Herb.) ; Lake Winnipisaukee, 10 September, 

 1910, Sargent 27 (Gray Herb.); Gustin Pond, Marlow, 29 

 July, 1899, Femald 186 (in part) (Gray Herb.) ; clayey sand, 

 shores of Thorndike Pond, 29 September, 1897, Rand & 

 Robinson 927 (Gray Herb.); Seabrook, September, 1895, 

 Eaton (U. S. Nat. Herb, and Univ. Minn. Herb.); Gilman- 

 ton, 4 September, 1911, hunt 60 (Gray Herb.) ; shingly mar- 

 gin of Fish Pond, Columbia, Coos Co., 22 August, 1912, 

 Pease 13790 (Gray Herb.) ; sphagnous bogs, by small ponds 

 near timber line, western slope of Mt. Lafayette, Franconia, 

 17-18 July, 1915, Femald & Smiley 11496 (Gray Herb.) ; 

 Loutenstein, Asquam Lake, 13 August, 1914, Gundersen 

 (Gray Herb.). 



Vermont: Lake Dunmore, 1859, Chapman (Mo. Bot. Gard. 



Herb.) ; in small pond near summit of Mt. Mansfield, 

 August, 1863, Mann (Gray Herb.); Lake of the Clouds, 

 Mt. Mansfield, 10 August, 1876, Pringle (Mo. Bot. Gard. 



