Plate 36, Figure 109.—Pleurotus dryinus. Side and upper view. Plant entirely white, scales sometimes buff or cream colored in age (natural size). Copyright.
Pleurotus sulfureoides Pk.—This rare species, first collected in the Catskill Mountains 1869, and described by Peck in the 23rd Report, N. Y. State Mus., p. 86, 1870, was found by me on two different occasions at Ithaca, N. Y., during the autumn of 1898, on rotting logs, Ithaca Flats, and again in Enfield Gorge, six miles from Ithaca. The plants are from 5–8 cm. high, the cap 3–5 cm. broad, and the stem 5–7 mm. in thickness, and the entire plant is of a dull, or pale, yellow.
Plate 37, Figure 110.—Pleurotus dryinus, form corticatus. Entire plant white, scales cream or buff in age sometimes. The ruptured veil shows in the small plant below (natural size). Copyright.
The pileus is nearly regular, fleshy, thin toward the margin, convex, umbonate, smooth or with a few small scales. The gills are rather crowded, broad, rounded or notched at the stem, pale yellow. The spores are elliptical, 7–9 × 5–6 µ. The stem is ascending and curved, nearly or quite central in some specimens in its attachment to the pileus, whitish or yellowish, mealy or slightly tomentose at the apex.
Figure [111] is from plants (No. 2953, C. U. herbarium) on rotting log, Ithaca Flats, October, 1898.
Figure 111.—Pleurotus sulfureoides. Entire plant dull or pale yellow (natural size). Copyright.