Report of the Michigan Academy of Science Volume 11 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...Russula.) Pileus 3-5 cm. broad, rather rigid, then fragile, rather thin, irregularly convex, soon centrally depressed or subumbilicate, at first even on margin, tubercular-striate when expended, the viscid pellicle separable on margin, ochraleucus (Sacc.)then grayish-brown, surface dotted by small, numerous, pale yellow somewhat mealy scales or patches. Flesh white with loose tissue. Gills white, unchanged, rather close, broadest in front, few forked at base, adnate, interspaces veiny. Stem 4-5 cm. long, 1-1 cm. thick, subequal or irregularly enlarged, stained or dotted with sulphur-yellow granules, white elsewhere, spongy-stuffed becoming cavernous, rigid-fragile. Spores white in mass, globose, 6-8 micr. Taste and odor somewhat disagreeable. Gregarious. On lawns, roadsides or margin of woods among grass, etc. July to September. Southern Michigan. I have referred here a Russula which differs from the description of R. pulverulenta Pk. in its striate pileus, less foetid odor, and from R. granulata in its yellow pulverulence on the stem. Since Peck's description was made from a single Michigan specimen, found by Longyear, it is very probable that the striations did not show in his plant as is often the case in fresh young plants. I have ventured to amend the description from my own notes, as I believe my specimens to be the same plants as Longyear's. The yellow granules may possibly represent a primitive universal veil, since they occur mostly on the margin of the pileus in young plants. The habitat seems to be mostly in open grassy places. 29. Russula Granulata Pk. (The granulated Russula.) This is close to R. foetens, of which it was formerly a variety. It differs in the pileus being "rough with minute granules or squamules," in its closer n...