=M. ore´ades= Fr. _Gr_—mountain-nymphs. Scotch bonnet. Champignon. Mousseron. (Plate LI, p. 221.) =Pileus= 1–2 in. broad, _reddish then becoming pale, absorbing moisture, whitish when dry, fleshy_, pliant, convex then plane, somewhat umbonate, even, smooth, slightly striate at the margin when moist. =Stem= 2–3 in. long, 1½ lines thick, _solid_, very tough, _equal_, tense and straight, _everywhere clothed with a villous-woven cuticle_ which can be rubbed off, pallid; bluntly rooted at the base, naked, not villous or tomentose. =Gills= free, broad, _distant_, the alternate ones shorter, _at first soft_, then firmer, pallid-white. _Odor_ weak, but _pleasant_, stronger when dried, _taste mild_. Commonly growing in circles or rows. _Fries._ =Spores= 6–7×5–6µ _K._; elliptical, 8×5µ _Massee_; nearly elliptical, white, 7.6–9µ long _Peck_. Common throughout the states during the summer months after rains, and in rings, but can be found from May until after frost. If one knows where the rings are to be found M. oreades can be gathered when shriveled, and are quite as good, after soaking, as when fresh. M. oreades must be sought for where the grass is luxuriant. It hides among it. It is well worthy of the search. Raw, fresh or shriveled, it is sweet, nutty, succulent when eaten; stewed well it is delicious. Though tough its consistency is agreeable. The most delicate stomachs can digest it. The writer saved the life of a lovely woman by feeding her upon it when nothing else could be retained; and of another, by feeding Coprinus micaceus, after a dangerous operation. He introduced these species, together with a few others, into a large hospital in Philadelphia, where they were used with marked beneficial effect, and such use is now widespread. When dried, by exposure to the air or sun, it can be kept indefinitely, neither losing its aroma or flavor, which it graciously imparts to soups or any other dish. Collybia dryophila, Stropharia semi-globata, and Naucoria semi-orbicularis are sometimes found growing with it. These species are delicious and harmless. Lafayette B. Mendel in the Am. Jour. of Physiology, March, 1898, gives the following analysis: Twenty freshly gathered specimens (from New Haven) weighed 9 grams, an average weight of 0.45 grams each. The analysis gave: Water 74.96% Total solids 25.04 Total nitrogen of dry 5.97 substance Ash of dry substance 7.23 _B._ TERGINI. ** _Stem downy when dry, etc._ =M. Wyn´nei= B. and Br. =Pileus= 1–1½ in. broad, _lilac_-brown, tardily changing color, fleshy, convexo-plane, somewhat umbonate. =Stem= 2 in. long, 1½ line thick, tubed, _furfuraceous_, somewhat of the same color as the pileus. =Gills= adnexed, thick, distant, bright-colored, beautifully tinged with _lilac_; interstices even.