Phycotheca Boreall-Americana.

Collins, Holden and Setchell.

1565. Micrasterias foliacea

Bailey.

Bailey in Ralfs, British Desmids, p. 210, Pl. XXXV, fig. 3, 1848.
Wood, F. W. Algae of N. A., p. 147, 1873.

Wolle, Desmids of the U. S., p. 118, Pl. XXXVIII, figs. 10 & 11, 1884.

De Toni, Syll. Alg., Vol. I, p. 1129, 1889.

Johnson, Bot. Gaz., Vol. XIX, p. 56, Pl. VI, figs. 1-4, 1894.

Among Mengeotia, with other small algae, Round Pond, Tewksbury, Massachusetts, Sept. 7, 1908.

F. B. COLLINS.

Phycotheca Boreall-Americana.

Collins, Holden and Setchell.

1566. Micrasterias laticeps

Nordst.

Nordstedt, Desm. Brasil., p. 220, 1870.

Wolle, Desmids of the U. S., p. 115, Pl. XXXVII, figs. 4 & 5, 1884.

De Toni, Syll. Alg., Vol. I, p. 1112, 1889.

M. disputata Wood, F. W. Algae of N. A., p. 42, Pl. XIII, fig. 4, 1873.

Among various other algae, Round Pond, Tewksbury, Massachusetts, Sept. 7, 1908.

F. B. COLLINS.

Yale University Herbarium

YU.094619

Yale University Herbarium

YU.094620