Phycotheca Boreali-Americana

Collins, Holden and Setchell

1361. Closterium acerosum

(Schrank) Ehrenb.

Ehrenberg, Abh. Akad. Berlin, p. 92, Pl. VI, 1831.

Wolle, Desmids of the U. S., p. 41, Pl. VI, figs. 7 & 11, 1884.

De Toni, Syll. Alg., Vol. I, p. 324, 1889.

In a water trough by the roadside, Berkeley, California,
March 5, 1906.

N. L. GARDNER.

Yale University Herbarium

YU.094398

Phycotheca Boreali-Americana

Collins, Holden and Setchell

1362. Cosmarium crenatum Ralfs.

Ralfs, Trans. Bot. Soc. Edinb., Vol. II, p. 150, Pl. XVI, fig. 6, 1846.

Wolle, Desmids of the U. S., p. 67, Pl. XLIV, figs 31-32, 1884.

De Toni, Syll. Alg., Vol. I, p. 941, 1889.

Cultivated in the Botanical Laboratory of the University of
California, Berkeley, California, May 6, 1906.

N. L. GARDNER.

Yale University Herbarium

YU.094399