The North American species of Psathyrella.

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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 24

46
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FIos. 36-49. Figs. 36-38, p. subtruncatiapora: 36, pleurocystidia; 37, cheilocystidia; 38,
Spores. Figs. 39-40, p. truncatispora. 39, pleurocystidia; 40, spores. Figs. 41-45, p. weberi:
41, cheilocystidia; 42, spores; 43, pleurocystidia; 44, spores (rom type) 45, pleurocytidia
from type. Figs. 46-48, P. alboalutace a. 46, c oystidi 7 chilocytid; 4 8, Spores.
Fig. 49, spores of P. maculat ea: e. 48, pores