THE MARINE BOTANIST. 



PUNCTARIA TERMISSIMA.— SLENDER 

 PUNCTARIA. 



Fronds delicate, always tapering* at the base, 

 and the margin more or less toothed. Fruit un- 

 known. Mrs. Griffiths considers this the young* 

 of P. latifolia. Grows on Zostera Marina, &c. 

 Annual. Summer. Bute and Appin in Scotland, 

 and near Dublin. 



ASPEROCOCCUS. 



Name signifying rough seed. 

 Frond milomxichedy tubular, cylindrical, or (rarely) 

 compressed, continuous, membranaceous. Hoot 

 minutely scutate, naked. Fmctification. Small 

 distinct spots (sori) composed of spores mixed with 

 erect club-shaped filaments. 



