40 Prof. Bailey on Localities of Alg@ in the United States. 
feet Peres in structure with some Alge from Van Diemens 
which IL lately founded the genus Rhabdonia. ‘The 
only of the Tasmanian species are known, and the 
Mosotic specimen has ‘only favellidia. The tetraspores ought 
to be ellipsoidal, divided by transverse rings, and to occur dispers- 
ed through the smaller branches.”—-Very fine specimens of this 
_ plant with abundance of fruit may be found in July, near Fort 
Hamilton and Bath, Long Island, N.Y. 
Chondrus Brodiai, Grev. Newport, R.1 
hondrus Norvegicus, Lamour. Massachusetts Bay. G. B 
Emerson. 
Ptilota plumosa, Ag: Very fine specimens of variety «, have 
been given me by Miss Sa eaibare of Salem, who collected them 
in Massachusetts Bay. At Newport I could only find variety @, 
which is a much aed elegant plant. 
Pegs allina officinalis, Linn. Very abundant on shores of New 
“2 cael of species of Corallinee collected at Key West by 
Dr. Wurdemann were presented to me by Prof. Gibbes, but as 
itis only recently that the vegetable nature of these bodies has 
been established, few of them are included in Algological vou 
and the determination of the species is attended with reat 
culty ; I hope, however, eS ——— at some future time, ist of 
our North American speci 
caer ceil. 
cladus claveformis, Ag. Key West. 
Acetabularia Psa Lamour. Key West. Common. 
_Conferva melagonium, Web. et Mohr. Near Beverly, Mass. 
Dr. Asa Gray ! 
Cladophora prolifera. Key West? 
Cladophora prasina, Harv. mss: “Its recent. affinity i is to C. 
rupestris.” Harv. Abundant on rocks below low water mark i in 
the Hudson Riverat West Point. 
Caulerpa concinna, Harv. uss. Key West. “A most pane 
mg new species, allied to°'C. Webbiana, Mont., but very distinct. 
Most of the species-are tropical.” Harv * 
Anadyomene flabellata, Ag. "Key West, Rather. common. 
K 
y West 
Bryopsis plumosa, Ag. New a eos N. ¥. Miss Salton- 
stall! a ber “he So L. the gal 
E'ctocarpus ’ Harv harleston, S. ©, Prof. 
Gibbes ! Not | in a and therefore a 1 doubtial Species, but its 
color very remarkable.” Harv 
Enteromorpha compressa, Grev.. | Chaseston, S. tt Prof. a 
3 sae 
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