236 FLORA OF MOUNT DESERT. 



and rounded, and margined with the unchanged membrane 

 of the frond. It grows nearer high-water mark than either 

 F. evanescens or F. edentatus. Somes Sound, on rocks near 

 high-water mark (Holden). 



LAMINARIACEiE. 



ALARIA, Grev. 

 A. esculenta (L.), Grev. 



Rather common in tide pools and below (Collins) ; — Sea 

 Wall (Holden). 



A. Pylaii (Borj^), J. Ag. A. esculenta, var. latifoUa, Far- 

 low's Manual, 97. 

 Rather common (Collins). Regarded as a distinct species by 

 most authors, and in its extreme forms quite different in appear- 

 ance from the preceding species. 



AGARUM, Bory. 



A. Turneri, Post. & Rupr. 



Common near and below low-water mark (Collins); — Sea 

 Wail (Holden). 



SACCORHIZA, De la Pyl. 



S. dermatodea, De la Pyl. 



Rather common in lower tide pools (Collins); — Sea Wall 

 (Holden). 



LAMINARIA, Lamour. Devil's Apron. 

 L. saccharina (L.), Lamour. 



Common in lower tide pools and below (Collins). 



L. longicruris, De la P}'!. 



Occasional. From deep water (Collins); — floating, Somes 

 Sound (Holden). 



L. platymeris, De la Pyl. 



Not uncommon. From deep water (Collins). 



