216 FLORA OF MOUNT DESERT. 



H. riparium, L. 



On decaying wood, Stanley Brook (Eand); — immersed among 

 Fontinalis Dalecarlica, shore of Northwest Arm, Great Pond 

 (Eand). 



Var. flaccidum, Lesq. & J. 



Deep woods, Little Cranberry Isle (Redfield). 



Subgenus CAMPYLIUM. 



H. hispidulum, Brid. 



On wet rocks. Western Mt. (Rand). 



H. chrysophyllum, Brid. 



On tree roots in moist ground. Long Pond (Theodore G. 

 White); — meadow on Sunken Heath Brook (Rand). 



Var. rupestre, Aust. 



Plants large, in dense cushions; stems usually long, branch- 

 ing; generally sterile. Austin, Musci App., No. 396 (1870). On 

 rocks in brooks. Sargent Mt. Gorge (Walter L. Burrage). 



Var. cKspitosum, Aust. 



Plants slender, densely caespitose. Austin, Musci App., No. 395 

 (1870). About tree roots. Seal Harbor (Theodore G. White). 



H. polygamum, Wils. 



In wet ground. Somesville (Rand). 



Subgenus HARPIDIUM. 



H. aduncum, Hedw. 



In wet ground. Sea Wall; Beech Cliff; Somes Pond (Eand). 



H. uncinatum, Hedw, H. aduncum, L. 



On ground, rocks, and decaying wood; very common. (Bur- 

 rage, Rand, Redfield.) 



Var. gracilescens, Bruch & Schimp. 



On ground in woods, Great Cranberry Isle (Rand). 



