Minnesota, Johnson, 1897; Kansas, Cragin, 1884; Wisconsin, Bundy, Nebraska, Clements.
Edible. Leuba.
Large quantities grew on rotting chestnut and oak rails at Mt. Gretna, Pa., from June to August, 1899. It is strong and unpleasant.
**** Tomento´si. Pileus at first veiled with a loose hairy veil.
Coprinus fimetarius.
C. fimeta´rius Fr.—fimetum, a dunghill. Pileus 1–2 in. across, membranaceous, thin, at first cylindrical, soon conical, the edge at length revolute and torn at the margin, when young everywhere covered with floccose-squarrose white scales (from the universal veil), which separate from the vertex toward the circumference, at length naked, longitudinally cracked, but not opening into furrows, the vertex which remains entire, livid. Stem about 3 in. long, 2–3 lines and more thick, hollow, fragile, thickened and solid at the base, attenuated upward, shining white and downy with squamules of the same color. Gills free, reaching the stem, at first ventricose, then linear, flexuous, black. Stem when young curt and firmer. Fries.
Spores spheroid-ellipsoid, 15–18×9–12µ K.; 15×9µ W.G.S.; 12–14×7–8µ Massee.
Sometimes there is a root as long as the stem. M.J.B. Common on dung heaps in successive crops. Spring to autumn.