POND WEEDS. 327 



Alabama: Adventive. In ;i ditch, suburbs of Mobile {Karl Zimmer^, 1886. Not 

 found since. 



Type locality : "Hab. in Euroi)ae ])aludibus." 

 Herb. Geol. Surv. Herb. Mohr. 



SPARGANIACEAE. Bur-reed Family. 



SPARGANIUM L. Sp. PL 2 : 971. 1753. 



Eight species, of cooler temperate regions. Eastern North America, 4 species. 

 Perennial aquatics. 



Sparganiuni androcladuni (lOngelm.) Morong, Bull. Torr. Club, 15:78. 1888. 



Spar(i(inium simplex var. androcladuni Eugelm. in Gray, Man. ed. 5, 481. 1871. 



Ell. Sk. 2 : 521. Gray, Man. ed. 6, 548. Chap. Fl. 443. 



Alleghenian to Louisiauiau area. New Brunswick, Ontario to Saskatchewan and 

 Vaucouver Island; New England west to Minnesota and Missouri, south to Florida, 

 Louisiana, and Arkansas. 



Alabama : Throughout the State. Shallow ponds from the Tennessee Valley to 

 the coast. Claj^ County, Elders, l,O0O feet. Cullman County. Tuscaloosa County, 

 Tannehill {E. A. Smith). Montgomery and Mobile counties. Flowers May to July. 

 Frequent. 



Tyi)e locality: "' From New England southward and especially westward." 



Herb. Geol. iinvv. Herb. Mohr. 



NAJADACEAE. Pondweed Family. 



POTAMOGETON L.Sp. PI. 1:126. 1753. Pondweed. 



About 65 .species. Floating aquatic herbs, mostly of the cooler temperate zone. 

 Cosmopolitan. Europe, Asia, North America, 37 species; endemic in Atlantic 

 North America, 14. 



Potaniogeton piilcher Tuckerm. Am. Journ. Sci. 45:38. 1843. 



Biirel. Flor. Bost. 63 (as P. nutans L.). Grav, Man. ed. 6, 560. Chap. Fl. Suppl. 

 6.52. '^Morong, Mem. Torr. Club. 3 : 16, /. S8. 



Alleghenian to Louisianian area. From Vermont to Georgia, Louisiana-, and Mis- 

 souri. 



Alabama: Central Prairie region. In stagnant water. Montgomery County, 

 "Cypress swamp" near city. October. Rare. 



Type locality: ''Hab. Ponds and slow streams. Medford, Stoueham [Massa- 

 chusetts]." 



Herb. Geol. Surv. Herb. Mohr. 



Potaniogeton lonchites Tuckerm. Am. Journ. Sci. ser. 2, 6 : 226. 1848. 



Potaniogeton fiuitans Roth, Fl. Germ. 1: 72. 1788?. 



Ell. Sk. 1:221. Gray, Man. ed. 6, 560. Chap. Fl. 446. Coulter, Contr. Nat. 

 Herb. 2 : 457. Wats. Bot. Calif. 2 : 196. 



Europe. 



Alleghenian, Carolinian, and Louisianian areas. Ontario and New England west 

 to Michigan, Minnesota, and Missouri, south to Florida and. Texas, and in Cali- 

 fornia. 



Alabama: Coast plain. So far only observed in the tide-water region. Gently 

 flowing Avater in the delta of Mobile River. Flowers in June and July. Not infre- 

 quent. 



Type localitj'^: "In the Charles at Newton and Natick [Massachusetts]." 



Herb. Geol. Surv. Herb. Mohr. 



Potamogeton alpinus Balbis, Misc. Bot. 13. 1804. 



Potamoin'ton nifesccns Schrad. in Cham. Adn. Fl. Ber. 5. 1815. 



Gray, Shin. ed. 6, 560. Wats. Bot. Calif. 2:195. Coulter, Contr. Nat. Herb. 

 2 : 457. .Morong, Mem. Torr. Club, 3 : 19, t. 30. 



Europe. 



Canadian zone to Louisianian area. New Brunswick, Quebec, A^ancouver Island, 

 Oregon, C ilifornia, New York, New .Jersey, and western Florida. 



'Morong, Najadaceae of North America, Mem. Torr. Club, 3: No. 2. 1893, 



