175- 
179. 
180. 
181. 
187. 
188. 
189. 
190. 
IgI. 
192. 
193. 
22 
\ 
Potamogeton lonchites Novzboracensis Morong, Mem. 
Torr. Club, 3: Part 2, 20 (1893). 
. Potamogeton lucens L. Sp. Pl. 126 (1753). 
. Potamogeton lucens Connecticutensis Robbins in A. Gray, 
4 
Man. Ed. 5, 488 (1867). 
. Potamogeton major (Fries) Morong, Mem. Torr. Club, 3: Part 
2, 41 (1893). 
Potamogeton pusillus var. major Fries, Novit. Ed. 2, 48 (1828). 
Potamogeton Friesii Ruprecht, Beitr. Pfl. des Russ. Reiches, , 
4: 43 (1845). 
Potamogeton compressus J. E. Smith, Eng. Bot. 3: 4. 478 (1794), 
not L. 
Potamogeton Mysticus Morong, Coult. Bot. Gaz. 5: 50 (1880). 
Potamogeton natans L. Sp. Pl. 126 (1753). 
Potamogeton Nuttallii Cham. & Schlecht. Linnea, 2: 226, ¢ 
6, f. 25 (1827). 
Potamogeton Pennsylvanicus Willd. ; Cham. & Schlecht. Lin- 
nea, 2: 227 (1827). 
Potamogeton Claytontt Tuckerm. Am. Journ. Sci. 45: 38 
(1843). 
. Potamogeton Oakesianus Robbins in A. Gray, Man. Ed. s, 
485 (1867). 
. Potamogeton obtusifolius M. & K. Deutsch. Fl. 1: 855 
(1823). 
. Potamogeton pectinatus L. Sp. Pl. 127 (1753). 
. Potamogeton perfoliatus L. Sp. Pl. 126 (1753). 
186. 
Potamogeton perfoliatus Richardsonii A. Bennett, Britten’s 
Journ. Bot. 27: 25 (1889). 
Potamogeton perfoliatus var. lanceolatus Robbins in A. Gray, 
Man. Ed. 5, 488 (1867), not Blytt, Norges Fl. (1861). 
Potamogeton przlongus Wulf. in Rém. Arch. 3: 331 (1805). 
Potamogeton pulcher Tuckerm. Am. Journ. Sci. 45: 38 (1843). 
Potamogeton pusillus L. Sp. Pl. 127 (1753). 
Potamogeton pusillus Panormitanus (Biv.) Morong, Mem. 
Torr. Club, 3: Part 2, 46 (1893). 
Potamogeton Panormitanus Biv. Sic. Pl. (1806-7). 
Potamogeton pusillus polyphyllus Morong, Coult. Bot. Gaz. 
5: 51 (1880). 
Potamogeton pusillus Sturrockii A. Bennett, in Hook. Stud. 
Fi. Ed. 3, 435 (1884). 
Potamogeton Robbinsii Oakes, Hovey’s Mag. 7: 180 (1841). 
