CHARACEAE AND SEAWEEDS. 147 



Order CONKER VALES. 

 Family ULVACEAE. 



ULVA L. Sea lettuce. 



Ulva lactuca (L.) Le Jolis. 



On piles and sunken timber, salt and brackish water. Mobile Bay. 

 Ulva eiiteromorpha Le Jolis. 



Mobile Bay, with the last. 



Class CHARALES. 1 

 Family CHARACEAE. 



CHARA Vaill. 



Chara gymonopus humboldtii A. Br. 



In swiftly running streams. Bibb County, Little Cahawba River (E. A. Smith). 

 Louisiana to New England. Europe. 



Chara fragilis (L.) Desv. 

 In swiftly running streams. Little Cahawba River, Bibb County (E. A. Smith). 



NITELLA Agh. 



Nitella glaziovii Zell. 



In deep, gently flowing water. Estuary of Mobile River. September, fruiting 

 abundantly under the water 10 feet deep. 



Nitella tenuissima A. Br. 



In deep, still, brackish water. Upper part of Mobile Bay ; dredged from a depth 

 of 15 feet and over. 



Nitella tenuissima A. Br., forma. * 



In large tufts. Baldwin County, above the mouth of Fly Creek on the muddy 

 bottom. Abundant. 



Nitella acuminata A. Br. 



In deep water. Estuary of Mobile River with N. glaziovii. 

 Nitella acuminata subglomerata A. Br. 



With the above. 

 Nitella acuminata brachyteles A. Br. 



With the last. 



Class PHAEOPHYCEAE. 



Order CYCLOSFORALES. 



Family FUCACEAE. 



SARG-ASSUM Agh. Gulf weed. 



Sargassum bacciferum Turn. 



Frequently washed ashore along the Mississippi Sound and on the strand of Bald- 

 win County. 



Sargassum vulgare Agh. 

 Rarely washed ashore on the outside shore and the outlying islands. 



1 Identified by T. F. Allen, M. D. 



