_ Prof. Bailey on Localities of Alg@ in the United States. 39 
of Zostera at Stonington, Conn. Its habit ei apt it ata 
glance from all other species, yet it is difficult to frame a deserip- 
tion of it which will serve to characterize it ; the fiblowing, how-~ 
ever, are some of its:principal characters. Frond two to four 
inches, rising by a single filament from a spreading root and al- 
most immediately giving off one or'more robust branches. These 
in their turn give off, at irregular intervals, long branches which 
are beset with short robust ramuli, the ultimate divisions of which 
are acute cones, at the apices of which a few slender fibres are 
attached. The plant is articulated throughout. Its color when 
fresh is reddish eet, when dry it appears nearly black. 
fruit has not yet been observed. I take peculiar pleasure in 
making use of this beautiful. plant to associate the name of Har- 
vey with those of the other distinguished Algologists to whom 
species of Polysiphonia have been dedicated. 
Dasya elegans, Ag. Spec. 11, 117=D. pedicellata, Agatith, 
Syst., 211. To the localities of this beautiful plant: previously 
given, I can now add Charleston, South Carolina, at which place 
it has been collected by Prof. Gibbes ; and Fort Hamilton, New 
York, where it is very abundant 
Unless I am greatly mistaken, Agardh’s Spheroecus Torreyt 
was founded ona battered specimen of this plant. I judge so 
from the examination of a fragment of the nig specimen still 
- preserved in Dr. Torrey’s Herbarium 
Dasya Wurdemanni, Bailey. This species from Key West, 
which Harvey thinks is new, I would dedicate to Dr. Wurde- 
mann to whom we are indebted for so many” fine specimens of 
the ae of Florida. 
dia filantentosa, Harv. Key West, also abundant at 
eringeot Conn. re 
Gracilaria dura? Ag. Key West. 
_ Gracilaria Helmintochorton, J. As. Key West. 
ea simpler, Ag. Ke 
“Eiglodictyon sp.? “An imperiooty developed specimen from 
Key West, ke only known species is from the Adriatic.” Harv. 
Rhodymenia palmata, . Asmall much divided variety 
hasebeen sollacted at Charleston by Prof. Gibbes. 
Rhabdonia Baileyi, agen, mss. I —_ d this panies several 
it to be a species of Chrysimenia, but after studying the in if i 
cation which I was recently fortunate enough to detect on speci- 
mens at Fort Hamilton, N. ¥., and which I sent to him preserved 
in Goadby ’s solution, he was enabled to determine its true char- 
acters. He says, “It ismot a Chrysimenia, the fruit it and struc- 
ture being that of the Cryptonemee, not C. in ee, Oddly 
