Phycotbeca Boreali-Americana.

Collins, Holden and Setchell.

1159. Oscillatoria proboscidea Crouan.

Crouan in Mazé & Schramm, Algues de Guadeloupe, p. 17, 1870.
Gomont, Monogr. des Oscill., p. 229, Pl. VI, figs. 10 & 11, 1893.

On rocks in stream, No. Berkeley, California, March, 1901.

N. L. GARDNER.

YU.092242

YU.092243

Phycotbeca Boreali-Americana.

Collins, Holden and Setchell.

1160. Oscillatoria salinarum n. sp.

Ditches of salt works, Salinas Bay, near Guánica, Porto Rico, June 29, 1903.

NEW YORK BOTANICAL GARDEN EXPEDITION
TO PORTO RICO, collected by M. A. HOWE.

Trichomes somewhat flexuous, sometimes coiled in a regular
circle, very torulose; extremity attenuate, slightly curved, obtuse.
Articulations nearly or quite as long as broad, diam. .004 mm. or
slightly less; calyptra wanting.

F. S. COLLINS.