Cosmarium pseudopyramidatum

NSW YORK.
BOTANICAL
GARDEN

NEW YORK BOTANICAL GARDEN

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l1

Cosmarium x-seudopyramidatum var. lentilerum, var. nov."

Taylor, -&lgae of llewf oundland Papers, Mich. Acad. of Sci.,
Arts. & Letters. Vol. 19 (rl. L, Pig. 7). p.261. 1933.

Cell of moderate size, about one half longer than
broad, truncate-elliptical, semicell apices depressed, the
sides curved, the basal angles rounded sinus linear;
wall moderately heavy, sparsely and finely punctulate, the
faces markedly internally thickened in a refractive
lenticular area about two fifths oi the diameter of the
semicell. L. 44-52 Xl, w. 28-36 ,-u, isth. 8-13^«. Pools.
Stas. 140, lookout Lit. (type); 148, 'l'he Tableland.

7/ille (1924) figures from the Antarctic; a smaller form
with slightly thickened sides, without distinctive name.

The var. subtumidum of Eaciborski (1889) is less thick-
ened, has rounded poles and coarser punctulation.

17—Cosmarium pseudo ¡jyramidatum Lund. var. lentiferum.
var. nov.—Cellulae mediocres, aimidio longiores cm am
latiores, trmicatae, ellipticae; semicellulis apice
depressis, lateribus curvatis, angulis basalibus rotund-
atis; sinu lineari; membrana modice crassa, sparse et
minute punctulata; faciebus intus valde cum lente
refractivo duas quintas semicellulae diametiente ornatus.
Long. 44-52 /a, lat. 28-36 4, lat. isth. 8-13/6. Newfound-
land, in loco dicto Lookout Mr.; legit Bayard long.

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