Yale University Herbarium

YU.094157

Phycotheca Boreali-Americana.

Collins, Holden and Setchell.

1201. **Chroococcus membraninus** (Menegh.) Naeg.
Naegeli in Bruegger, Buendner Algen, p. 245, 1863.
Rabenhorst, Fl. Eur. Alg., Vol. II, p. 31, 1865.
Pleurococcus membraninus Meneghini, Monogr. Nost., p. 34, Pl.
IV, fig. 1, 1842.

Forming a zone, yellowish red just above, and blue green
just below, the edge of the water, very low, in "The Lagoon,"
Niles, Alameda Co., California, Nov. 5, 1898.

W. A. SETCHELL.

Yale University Herbarium

YU.094158

Phycotheca Boreali-Americana.

Collins, Holden and Setchell.

1202. **Chroococcus varius** A. Br.
A. Braun in Rabenhorst, Alg. Eur., No. 2451.

On walls of greenhouse, Botanic Garden, Cambridge, Massa-
chusetts, Jan. 12, 1899; with Schizothrix calcicola, etc.

F. S. COLLINS.