of Lemanea fluviatilis, Agardh. E 
tical; and it may easily be conceived to what confusion and mischief the 
promulgation of such errors may give rise. 
EXPLANATION OF PLATE XIX. 
Fig. 7. The young state of Lemanea fluviatilis, Agardh, of the natural size. 
Fig. 8. The same, highly magnified, showing at a, the early development of a branch; 
b, another branch, more advanced, from which rootlets are given off at the base ; 
c, à still more developed branch, attached by its roots. | 
