Cosmarium pyramidatum Bréb.

COSMilRIUM PYRAMIBAFOM, BREB. - Fresh-water Algae of the United States

page 18, February 1872* (Smithsonian contribution to knowledge,241) •

C. mediocre, ovale Tel subovale, utroque polo truncatum, medio

profunde constriotum, duplo fere longius quern latum; semicellulis
breviter pyramidatis, angulis inferioribns rotnndatia, apioe (dorso)
modo truncatis modo rotundatis, a vertioe late elliptioia; oytiod-
ermate punctato vel subtillissime granulato. (R.)

Long.0.0021"-0.0037". Lat max, 0.0026".

Syn.-C. pyramidatum. BREBISSOH. RABEHHORST, Flora Europ. Algarum,

Sect. III. p. 162.

Hab.-Georgia; Florida; Bailey. Pennsylvania; WOOD.

Frond soaroely twice as long as broad, suboval; constriction
deep, linear; segments pyramidal, rounded at basal angles,some-
what truncate at the ends, punctate; e. v. broadly elliptic. (A.)

REMARK.-Fig. 14, pi. 13, is a drawing of this species.

“ H. COSMARIUM PYRAMIDATUM "CL.

14-.

NEW YORK BOTANjCAL GARDEN