Inodorous. Gregarious or cespitose. The stem springs from a white mycelium, but is by no means strigose or tawny at the base. Quite distinct from M. fusco-purpureus. _Fries._ Among leaves, twigs, etc. _Stevenson._ =Spores= elliptical, 7–8×4µ _Massee_. Kingsessing, West Philadelphia. Gregarious and cespitose, among leaves, etc., in oak woods. September to October, 1885. This very pretty fungus very much resembles at first sight the small purplish Clitocybes, but is readily distinguished on examination. I ate the caps and enjoyed them during the seasons of 1885 and 1887, but have not seen the plant since. The caps are equal to M. oreades. _C._ CALOPODES. * _Stem smooth, etc._ =M. scorodo´nius= Fr. _Gr_—a plant that smells like garlic. =Pileus= ½ in. and more broad, rufous when young, but soon becoming pale, whitish (not hygrophanous), slightly fleshy, pliant, convex then soon plane, obtuse, always arid; even when young, at length wrinkled and crisped. =Stem= 1 in. long, scarcely 1 line thick, _horny_, tough, tubed, equal, _very smooth throughout, shining, reddish, inserted and naked_ at the base. =Gills= _adnate_, often separating, connected by veins, at length crisped in drying, whitish. Commonly gregarious. _Readily distinguished from neighboring species by its strong odor of garlic._ _Fries._ Heaths and dry pastures on twigs, etc. Rare. Edible. Esteemed for flavoring. _Stevenson._ =Spores= elliptical, 6×4µ _Massee_. North Carolina, _Schweinitz_, _Curtis_; New England, _Frost_; New Jersey, _Ellis_; New York, August, _Peck_, 23d Rep. =M. ca´lopes= Fr. _Gr_—beautiful; a foot. =Pileus= about 4 lines broad, _whitish_, slightly fleshy, tough, convex then flattened, obtuse, rarely depressed, even, smooth, slightly wrinkled when dried. =Stem= 1 in. long, 1 line thick, tubed, slightly attenuated upward, even, _smooth_, tough, dull-red or _bay-brown-red_, shining, _somewhat rooted_. =Gills= slightly emarginate, in groups of 2–4, thin, white. _Inodorous._ Almost smaller than M. scorodonius, but the stem is longer, otherwise very like it. _Fries._ =Spores= elliptical, 7×4µ _Massee_. Twigs and stems among fallen leaves in woods. Ticonderoga. August. This might easily be mistaken for M. scorodonius, but it is without odor, and has a different insertion of the lamellæ. It is sometimes cespitose. The pileus in our specimens is whitish. _Peck_, 31st Rep. N.Y. State Bot. Because of its similarity to M. scorodonius, which is edible, it is given here. II.—MYCENA. _A._ CHORDALES.