PONDWEEDS. 327 
ALABAMA: Adventive. In a ditch, suburbs of Mobile (Kart Zimmer), 1886. Not 
found since. 
Typo locality: “Hab, in Europae paludibus.” 
Herb. Geol. Surv. Herb. Mohr. 
SPARGANIACEAE. Bur-reed Family. 
SPARGANIUM L. Sp. Pl. 2:971. 1753. 
Right species, of cooler temperate regions. Eastern North America, 4 species. 
Perennial aquatics. 
Sparganium androcladum (Engelm.) Morong, Bull. Torr. Club, 15:78. 1888 
Sparganium simplec var. androcladum Engel. in Gray, Man. ed.5, 481. 1871. 
Ell. Sk. 2:521. Gray, Man. ed. 6, 548. Chap. FI. 443. 
Alleghenian to Louisianian area. New Brunswick, Ontario to Saskatchewan and 
Vancouver 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. Clay County, Elders, 1,000 feet. Cullman County. Tuscaloosa County, 
Tannehill (£. 4. Smith), Montgomery and Mobile counties. Flowers May to July. 
Frequent. 
Type locality: ‘‘ From New England southward and especially westward.” 
Herb. Geol. Surv. Herb. Mohr. 
NAJADACEAE. Pondweed Family. 
POTAMOGHETON L. Sp. Pl. 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. 
Potamogeton pulcher Tuckerm. Am. Journ. Sci. 45:38. 1843. 
Bigel. Flor. Bost. 63 (as P. natans L.). Gray, Man. ed. 6,560. Chap. Fl. Suppl. 
652. Morong, Mem. Torr. Club. 3:16, ¢. 28. : as ; 
Alleghenian to Louisianian area. From Vermont tv 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, Stoneham [Massa- 
chusetts].” 
Herb. Geol. Surv. Herb. Mohr. 
Potamogeton lonchites Tuckerm. Am. Journ. Sci. ser. 2, 6: 226. 1848. 
Potamogeton fluitans Roth, Fl. Germ. 1:72. 17882. 
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 water in the delta of Mobile River. Flowers in June and July. Not infre- 
uent. : 
. Type locality: ‘‘In the Charles at Newton and Natick [Massachusetts].” 
Herb. Geol. Surv. Herb. Mohr. 
Potamogeton alpinus Balbis, Misc. Bot. 18. 1804. 
Potamogeton rufescens Schrad. in Cham. Adn, Fl. Ber. 5, 1815. . 
Gray, Man. 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, Vancouver Island, 
Oregon, California, New York, New Jersey, and western Florida. 
1Morong, Najadaceae of North America, Mem. Torr. Club, 3: No. 2. 1893, 
