CATALOGUE OF PLANTS. 237 



L. digitata, Lamour. 



Sea Wall (Holden). 

 Var. ensifolia, Le Jolis. 



A rather small form, with numerous narrow linear segments, 

 and rather slender, rounded stipe; growing mostly in shallow 

 water. In tide pools, Little Cranberry Isle, and elsewhere 

 (Collins). 



CHORDA, Stack. 

 C. filum (L.), Stack. 



Rather common at Little Cranberry Isle (Collins). 



RALFSIACE^E. 



RALFSIA, Berk. 

 R. clavata (Carm.), Crouan. 



On woodwork and shells near Seal Harbor (Collins). 

 R. pusilla (Stroemf.), Holmes & Batters. 



A minute plant, forming ?, dark brown or black coating on 

 the filaments of Chsetomorpha; somewhat like R. clavata, but a 

 much smaller plant in all its parts ; the habitat quite distinct, 

 JR. pusilla growing only on algae, R. clavata on any hard life- 

 less substance indiscriminately. On Chcetomorpha Melagonium, 

 Sea Wall (Holden). 

 R. verrucosa (Aresch.), J. Ag. 



Common all along the shore (Collins). 

 R. deusta, J. Ag. 



At and below low-water mark, near Seal Harbor (Collins) ; 

 tide pool, Sea Wall (Holden). 



CHORDARIACE.E. 



CHORDARIA, Ag. 

 C. flagelliformis (Fl. Dan.), Ag. 



Common all along the shore (Collins) j Somes Sound 

 (Holden). 



