NATURAL HISTORY. 
y-Lonerrrutus. DeCandolle, Fl. France. 
6. SHerarpr, Ner., Brit. p. 72. t. 13. 
e«. MuLtTriripus, This common species 
is very variable in habit and mode of growth.— 
The above are the most remarkable varieties. 
o. F. -Serratrus. E, Bot. t, 1221. Ner. Brit, 
p. 1. t. 1. Common. 
6. F. Crranoripes. EK. Bot. t.215. Turn. 
Hist. Fuci, t. 89. Near the entrance of the Dart, 
and at the back of Exmouth warren. 
a F.. CanatrcuLatous. | Turn, Hist. Fuci, t. 
3d. E. Bot. t. 823, Frequent. 
HIMANTHALIA, 
In this genus the frond springs from a cup-shaped 
base, and the tubercles are imbedded in the whole 
length of the frond, 
iB, Lorna’: .Turm Hist. Fue; §: 2962. E: 
Bot. t. 569. (Fucus Loreus.) Neighbour. 
hood of Torquay. 
CYSTOSEIRA. 
With cylindrical stipes—plane lower leaves, and 
filiform upper ones, with innate vesicles—the fructi- 
fication, tubercles in common cellular receptacles, 
1. C. Srrievosa. E. Bot. t..474. © Turn. 
Hist, Fuci, t. 159. (Fucus Siriquosa.) f. 
