Professor Peck, 49th Rep. N.Y. State Bot., gives the following: =Pileus= thin, convex or nearly plane, sometimes with the margin elevated, irregular, obtuse, glabrous, varying in color, commonly some shade of bay-red or tan-color. =Flesh= white. =Lamellæ= narrow, crowded, adnexed or almost free, white or whitish, rarely yellowish. =Stem= equal or sometimes thickened at the base, cartilaginous, glabrous, hollow, yellowish or rufescent, commonly similar in color to the pileus. =Spores=, 6–8×3–4µ. =Pileus= 1–2 in. broad. =Stem= 1–2 in. long, 1–2 lines thick. Woods, groves and open places. Common. June to October. West Virginia, North Carolina, New Jersey, Pennsylvania. _McIlvaine._ C. dryophila is so common and variable that descriptions would fail to cover it in its eccentricities. The writer has eaten it in all the forms obtained since 1881. A very pretty form grew in large quantities among pine needles at Eagle’s Mere, Pa., in August, 1897. It was cooked and served at the hotel table. Many ate it and were delighted. Dr. Badham refers to a case in which illness was caused by eating it. In my eighteen years' experience with it, knowing it to have been enjoyably eaten by scores of persons, I have not heard of the slightest discomfort from it. =C. spinulif´era= Pk.—_spinula_, a little thorn. =Pileus= fleshy, thin, convex or nearly plane, glabrous, hygrophanous reddish tan-color tinged with pink and slightly striatulate on the margin when moist, paler when dry, adorned with minute colored spinules or setæ. =Gills= narrow, close, rounded behind and free, pale cinnamon-color, becoming somewhat darker with age, spinuliferous. =Stem= slender, tough, glabrous, shining, hollow, reddish-brown, often paler or whitish at the top, especially in young plants, with a whitish myceloid tomentum at the base. =Spores= elliptical or nearly so, 4µ. =Plant= cespitose. =Pileus= 8–16 lines broad. =Stem= 2–3 in. long, about 1 line thick. Prostrate trunks and ground among leaves in woods. Lewis county. September. In this species the lamellæ, under a lens, appear to be minutely pubescent or velvety. This is due to the colored spinules or setæ which clothe them. _Peck_, 49th Rep. N.Y. State Bot. Angora, Pa. September, 1897. Among moss in mixed woods. September to frost. _McIlvaine._ Specimens identified by Professor Peck. Stems of some tapered at base. Excepting the extreme base of stems the whole plant is tender and of good flavor. (Plate XXXI.) [Illustration: COLLYBIA ACERVATA (young).]