Phycotheca Boreali-Americana. Collins, Holden, and Setchell.

401. Phormidium autumnale Kuetz.

Kuetzing, Sp. Alg., p. 251, 1849.

Gomont, Monogr. des Oscill., p. 192, Pl. IV, figs. 31 & 32, 1893.

a. Growing in a fresh water stream, on the surface of a rock frequently washed by salt water, and in a storm practically submerged; Conanicut Island, Rhode Island, Aug. 10, 1894.

H. M. RICHARDS.

b. On stone drinking fountain, Revere, Massachusetts, Oct., 31, 1897.

F. S. COLLINS.

402. Porphyrosiphon Notarisii Kuetz.

Kuetzing, Tab. Phyc., Vol. II, p. 7, Pl. XXVII, fig. 1, 1850.

Gomont, Monogr. des Oscill., p. 69, Pl. VII. figs. 1 & 2, 1893.

On clayey soil in damp "Black-jack" woods, Chester, South Carolina, Jan. 10, 1898.

H. A. GREEN.

Yale University Herbarium

YU.106503

Yale University Herbarium

YU.091483

Yale University Herbarium

YU.091484