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Macroalgal Herbarium Consortium Digitization Project

Yale University Herbarium

YU.095143

Phycotheca Boreali-Americana.

Collins, Holden and Setchell.

Algae of Bermuda.

1891. *Polysiphonia opaca* (Ag.) Zan.

Zanardini, Syn. Alg. Adriat., p. 63, 1842.

J. G. Agardh, Sp. Alg., Vol. II, p. 1055, 1863.

De Toni, Syff. Alg., Vol. IV, p. 942, 1903.

Hutchinsia opaca Agardh, Syst. Alg., p. 148, 1824.

On rocks, Tuckertown, April 25, 1912.

F. S. COLLINS.

The same species, from Florida, was distributed as P. B.~
A., No. 1143.