122 5^.4 MOSSSS. 



three inches long and one-fourth of an inch wide, 

 very thin and delicate, fringing both edges of a 

 blade of Zostera, or growing in the same manner 

 from the sides of a frond of Chorda filum. Mr. 

 Collins finds it in deep water and on Zostera, at 

 Revere, from April to July; Mrs. Davis, from 

 April to November, in rock pools everywhere about 

 Gloucester. I have a copy of the t)fpical form 

 collected by Mr. A. R. Young, at College Point, 

 L. I., in May. It was collected by Mr. Hooper, at 

 Fort Hamilton, New York Bay, and at Flushing 

 Bay, by Prof. Bailey. 



PONCTAEIA PLANTAGINEA,* GrEV. 



Frond, dark brown, leathery, much attenuated at 

 base from near the middle, blunt or wedged-shaped 

 at the top, from six to twelve inches long and 

 from one to one and a half inches wide. It is a 

 summer annual, and grows on stones and other Algse, 

 between tide marks and below. It is not so com- 

 mon as the last, but I have it reported aU along 

 our north eastern seaboard. 



It does not usually adhere well to paper, and it 

 is far from being an inviting specimen to persons 

 whose interest in these plants is other than scientific. 



* Flantaginea ^ Like the Plantain. 



