Tough, persistent, inodorous, usually on wood, very cespitose, but individuals of the same species sometimes grow singly on the ground. FRAGILIPEDES (fragile-stemmed). Page 130. Stem fragile, juiceless, fibrillose at the base, scarcely rooting. Pileus hygrophanous. Gills becoming discolored, at length somewhat connected by veins. Thin, fragile, often soft, normally growing singly on the ground. A few strong smelling, cespitose on wood. FILIPEDES (thread-stemmed). Page 130. Stem thread-like, flaccid, somewhat tough, rooting, juiceless, generally extremely long in proportion to the pileus. Gills becoming discolored, paler at the edge. Straight, growing singly on the ground; inodorous. Pileus dingy-brown, becoming paler. LACTIPEDES (milky-stemmed). Page 130. Gills and rooting stem milky when broken. GLUTINIPEDES (glutinous-stemmed). Page 131. Stem juiceless but externally sticky with gluten. Gills at length decurrent with a tooth. BASIPEDES (base-stemmed). Page 131. Stem dry, rootless, the base naked and dilated into a disk or small hairy bulb. Growing singly, slender, soon becoming flaccid. INSITITIÆ (_insero_, to insert or graft). Page 131. Stem very thin, dry, growing as if inserted in the supporting surface, not downy, not disk-like at the base. Gills adnate with a small decurrent tooth. Small, very tender, becoming flaccid with the first touch of the sun. Mycena is a large genus composed of small species. About sixty members have been found in America. They are from ½ to 1 in. across the cap, with thin stems and altogether delicate appearance. Yet the flesh of most of them has a gummy consistency in the mouth, and they shrink but little in stewing. Heretofore not any appear to have been reported as edible, probably because the size of the species has not attracted experimenters. While some have a strong odor and taste of radishes, and one species is bitter, it is probable that all are edible. The writer has eaten, raw and cooked, small quantities (all he has found) of many species not here reported as edible, which will, when further tested, be reported upon. The substance and flavor of those here given is remarkably pleasant. Their late coming, hardiness and abundance are commendable qualities. I.—CALODON´TES. Stem juiceless. Gills minutely toothed. None tested. II.—ADONI´DEÆ. Stem juiceless. Gills of one color, etc. None tested. III.—RIGIDI´PEDES. Stem rigid. Gills at first white, changing color, etc.