Pleurococcus seriatus H.C.Wood

The New York

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PLSUBOCOCCUS SÌEMJ5, 1002, (sp, nov.) - Freshwater Algae of the
United States page 78, r'ehruary 1872. (Smithsonian contribution
to knowledge, 241).

P. corticolus, strata ptilverula, rubido-brunnea, nonnihil crus-
tacea formane; cel Mis enormiter subglobosis, velovalibus,
laete aurantiacis, interdigli viride tinctis, haud distincte
nucleatis, in seriebus singulis reotis rei curvatis conjunc-
t is ; tegumentis crassis, ¿and lamellosis, color is expertibvs,

Diam.-4/750Qn-9/7500" = .00053"-.0012".

Hab.-In palude, lew Jersey. (Austin.)

Growing on berk, forming a reddish-brown, somewhat crustaceous pow-
dery mass ; cells irregularly subglobose, or oval, bright orange,
sometimes tinged with green, not evidently nucleated, conjoined
in single straight or curved series; tegument thick, lamellate,
or not so colorless.

BEMUSES.- I am indebted to Mr. ¿ustin' for specimens of this littlp
plant, which he found growing in a swamp near Closter, northern
Hew Jersey, on a young pin oak, It foxms a sort of crustaceous
powder, with little aggregations here and there, of a dull red-
dish-brown color, i/hen these little masses, are broken up,
they are found to be composed of littel series of very closely
joined cells, generally a half dozen to a dozen in the row.
believe that at certain states of their growth these cells are
green, as many of them hav a very decided green tint on their
edges, and I have seen one or two of them quite green.

Fig. 2, pi, 10, represents this species magnified 460 dia-
meters.

Vi IO “ 2- PLEUROCOCCUS SERIATUS

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