38 Prof. Bailey on Localities of Algein the United States. 
RHODOSPERMEE. 
Rhodymenia cristata, Grev. Massachusetts Poy Fine speci- 
mens of this interesting plant were given me by Miss Saltonstall 
of Salem, Mass. It has been found also at Newport and Staten 
Island, while in the Eastern Atlantic, according to re it is 
not. found south of the Orkney Islands. _ 
Amansia multifida, Lamour. Key West. 
— obtusa, rage Paid engl 
pinnatifida, Lam Key W 
Thwenc Baiteyanumn M Mout, in litt. I had supposed this to 
Se dasyphylla, but Dr. Montagne, to whom I sent 
it, pronounces it new, and gives the following 
as its specific 
ai Mont. Fronde elongata filiformi subsimpliei, 
ramentis subternis kineari-lanceolatis utrinque attenuatis e 
‘ (Individuum tetrasporophorum).” He adds, that “ not- 
wit ing the close affinity of this Alga to Laurencia tenawis- 
epic to L. dasyphylia, it cannot be confounded with either 
of them. The absence of ramification distinguishes it sufficient- 
ly from the first, and the form of the ramenta does not permit it 
to. be referred to the second, from which it is in other respects 
quite distinct.” 
Tt occurs at Newport, R. I. , Stonington, Conn., and For Ham- 
ilton, N 
Hypnea ‘robusta, ee mss. “A fine racist quite new to 
me. ” Harv. Key Wes 
ea musciformis, tod Key Wes 
inoue. clavulatum, Ag. ” bases at ‘Key West. 
Ceramium fastigiatum, Harv. Common at Newpor R.1. ,and 
Hamilton, Ny Y; 
Callithamnion Baileyi, Harv. mss. “A distinct 
> Harv. Abundant at Fort Hamilton and thew ay 
ton, N. Y. 
Callithamnion arachinoidew, Ey Rhode Island. 
Alsidium trian: J. Ag. 
Polysiphonia (Alsidium 4) Gibbest, ‘her, MSS. Key —— 
“ A very remarkable ”’. Harv 
Polysiphonia breviarticulata, Ag. ¢ A Methiterranctn nean spe- 
cies, the Florida specimens very bimilet vl the European: ng 
smaller.” Harv. 
Polysiphonia variegata, Ag.» Very fine specimens near the 
light-house at Stonington, Conn. 
Polysiphonia nigrescens, Grev. I collected Bobiatifuh mi 
mens of a — vatiety of this Lege at New Brighton, N.Y. 
Polysiphon A distinet and 
species which I T found growing i in 
