260 BOTANICAL GAZETTE [APRIL 
The water along the margins of the bay is consequently in many 
places largely diluted in this way, so that, although the ditches - 
above mentioned were repeatedly covered by the high tides dur- 
ing my stay, the water they contained was seldom perceptibly 
brackish. 
A second locality was found at Daytona, a more northern 
station on the Halifax “river,” where the alga occurs abundantly 
quite above and beyond any tidal influence in the rapidly flowing 
waters of the ‘‘canals,’’ several of which intersect the town 
toward the south at right angles to the shores of the “river.” 
A large mass was also found floating in a stagnant ditch on the 
Port Orange road south of Daytona, and it was seen to be con- 
spicuously abundant in a brook which crosses the railroad just 
north of the New Smyrna station ; while lastly a quantity was 
found on the margin of the St. John’s river just below Jackson- 
ville. In this connection it may be mentioned that specimens 
in the Herbarium at Harvard sent by Mrs. Curtiss are said to 
have been found in “tidal water” in the Hillsborough river near 
Tampa in west Florida; while it is further reported from Green- 
cove and Blue Springs in the St. John’s river region, as well as 
from Jupiter inlet on the east coast. 
It is thus evident that Compsopogon is widely distributed 
and probably common in Florida; and that, although it may 
occur in tidal water that is practically fresh, it is characteristically 
an inhabitant of waters in which there is no admixture of salt. 
Concerning the species of Compsopogon very little appear 
to be known and but few forms have been described; the brief 
list, exclusive of one or two uncertain species, comprising C. 
leptoclados Mont., from Guiana; C. chalybeus Kuetz., from Guiana, 
Porto Rico, and Florida; C. aeruginosus (J. Ag.) Kuetz., from 
Cuba; C. coeruleus (Balbis) Mont., from Florida, the Antilles, 
and Algeria; and C. Corinaldi (Menegh.) Kuetz., which has af 
apparently very limited distribution in Italy ; to which, accord- 
ing to De Toni (Sylloge 4:29), should be added C. lividus 
(Hooker) De Toni from Madras. That some of these are 
merely synonyms seems hardly doubtful, and so far as ca? be 
