Vol.1] SeirlieU-dardner. — Alga of Xorfhiresffrn America. 187 



Lyngbya aestuarii L natans (Jomont. 



Floating" on pools in salt marshes. West and east shores of 

 Whidbey Island, Wash., N.L.G., Nos. 421!, 571!, 598!, and in 

 Collins, Holden and Setchell, P. B.-A., No. 904! 



Lyngbya aestuarii f. ferruginea Gomont. 



In pools in salt marshes. Near Conpeville, Whidbey Island, 

 Wash.; X.L.G., No. 801! 



Intermingled with the next form. 



Lyngbya aestuarii f. spectabilis (Tlmret) Gomont. 

 Intermingled with the last. 



Lyngbya aestuarii f. aeruginosa (Tomont. 



Floating on i)Ools in salt marshes. Whidbey Island, Wash., 

 X.L.G., Nos. 230!, 429!; Port Townsend, Wash., N.L.G., 

 No. 610! , and in Collins, Holden and Setchell, P. B.-A., No. 902! 



Lyngbya semiplena (Agardh) J. Agardh. 



Salt marsh. Whidbey Island, Wash., X.L.G., No. 615! 



Lyngbya splrulinoides Gomont. 



Floating among varions filamentons algiv. Lake Washington, 

 Seattle, Wash., X.L.G., No. 493! 



Lyngbya aerugineo-caerulea (Knetzing) Gomont. 



Intermingled with other filamentons algff'. Small i)ond on an 

 island in the Mnir Glacier, Alaska, Saxiiders (1901, p. 398); 

 Junean, Alaska, Sainidprs (1901, p. 398). 



Lyngbya versicolor (Wartmann) Gomont. 



Floating on a deei) pool of fresh water. Glacier Valley, 

 Unalaska, Alaska, A.A.L., No. 5024! 



Lyngbya Lagerheimii (Moebins) Gomont. 



Among varions lilamentous alga?. Whidbey Island, Wash., 

 X.L.G., No. 303! ; snlphnr spring, Ravenna Park, Seattle, Wash., 

 X.L.G., No. 400! 



Lyngbya ochracea (Knetzing) Thnret. 



In gelatinous masses on moist bank of creek. Near Port 

 Renfrejv, B.C., Tildpn, No. 588! 



