Agaricus Stromatarius, Ball. In a hot bed of stable manure; Dunkern garden. 2 June 1887. Pileus nearly plane, at length split and revolute, leaving a central umbos; girth same at length dwindling into a black lipoid. Gill shallow. Stem snow white, hollow, submembranous, flat-cylindrical at length splitting. Root elongated, fusiform, solid, nearly simple. Pileus 1-2 inch in diameter, stem 1-2 inches high; bulbous at the base, and then continued downwards into a slender stipe solid whitish root. Spores oval opaque, brownish-black very minute. The stem is a very easily compressible cylinder cottony membranous above, and of a silky lustre, terminating in a hollow bell and then in a solid root, which emits on a two piles. It is allied to A. radiatus and grows in similar situations. At first expanded by the broader stem and solid elongated root. In dry weather the pileus soon after emerging becomes revolute, but in wet it retains a plane figure of split and trapped as well as wet-and black at its extremities. It begins to emerge from the soil about 6 o'clock P.M. mentioned from an inch above the surface at 8 P.M. It was in being on 9th July with a black liquor at 9 A.M. the following day. Sometimes the stem breaks into two, the upper part with the pileus falling off, but both portions of the stem splitting into 4 or 5 pieces, which are reattached.