G. LIAGORA. 
107 
probably they would not be found in the latitudes 
bordering on the frozen seas of either pole. 
VARIEGATED. 
1. Liagora versicolor. Stem branching or dicho- 
tomous; extremities simple or bifurcated:- colours 
varying from white to yellow, to red, and to green. 
Var. A. Branches dispersed. 
Var. B. Branches compressed, very flexible, and 
frequently dichotomous. 
Var. C. Branches constantly dichotomous ; rather 
stiff, and nearly cylindrical in the state of desiccation . 
Variety A. European seas ; B. coasts of France; 
C. Mediterranean. 
CERANOIDOUS. 
2. Liagora ceranoides. Stem dichotomous; di- 
chotoma numerous and near to each other ; branches 
the thickness of a boar’s bristle, forked in its ter- 
mination ; colour whitish ; height from four to five 
centimetres. 
On the coast of the Island of St. Thomas. 
VESICULAR. 
3. Liagora physcioides . Stem branching and 
even ; branches dispersed, few in number, and of a 
brown colour. 
Mediterranean. 
ORANGE. 
4. Liagora aurantiaca . Stem branching, and gar- 
