NATURAL HISTORY. 
quay, Babbacombe, &c.—The former may proba 
bly be a variety of this. ; 
4, U. Linza.  Dhill. Mise. t. 9.7.6. Rocks 
near Exmouth, 
9. Fronds tubular, 
FISTULARIA. 
Root scutate—frond membranaceous, simple or 
branched, Fructijfication naked, immersed granules 
dispersed thro’ the whole, in clusters of about four. 
1. F. Intrestinaris. E, Bot.t.1739' (Utva 
Compressa.) Frequent on marine rocks, 
2. F. Fistutosa. E, Bot. t.642, (Unva 
Fistutosa.) Ditto. 
NODULARIA. 
In this genus the roots are scutate, the fronds 
filiform, rigid, and torulose—the fructification oblong 
granules in the tubular frond, 
1, N. Fuuviatitis. E. Bot. t. 1763. Dillw. 
t. 29. (Conr. Fiuviatixis.) In various 
parts of the Dart, Teign, and Exe, where the 
stream is clear and rapid. 
OSCILLATORIA. 
Plants with gelatinous simple filaments, filled in- 
