The description of Fries as enlarged and modified by Professor Peck, together with that of the varieties placed to the credit of the species by Gillet, are given above in full. The species with its ascribed varieties is common and well known. Var. _ba´dius_ occurs in West Virginia and Pennsylvania. They are all edible and vary but little in quality. L. subdulcis requires long cooking. =L. muta´bilis= Pk.—changeable. =Pileus= 2–4 in. broad, thin, convex or nearly plane, zonate when moist, reddish-brown, the disk and zones darker, zoneless when dry, flesh colored like the pileus. =Milk= sparse, white, taste mild. =Gills= narrow, close, adnate, whitish, with a yellowish or cream-colored tint when old. =Stem= 1–2 in. long, 3–5 lines thick, equal or tapering upward, stuffed or spongy within, glabrous, colored like the pileus. =Spores= subglobose, rough, 7.6µ broad. Low, damp places. Selkirk and Yaphank, N.Y. June and September. The species is allied to L. subdulcis, from which the larger size and zonate pileus separate it. The zones disappear in the dry plant, and this change in the marking of the pileus suggests the specific name. They appear to be formed by concentric series of more or less confluent spots and are suggestive of such species as L. deliciosus and L. subpurpureus. _Peck_, 43d Rep. N.Y. State Bot. West Virginia, Pennsylvania. Solitary but frequent. In moist woods and margins of woods. June to October. _McIlvaine._ I have been familiar with and eaten this plant since 1882, but thought it might be a variety of L. deliciosus, with light-colored milk. L. mutabilis is an excellent species, equal to any Lactarius. =L. camphora´tus= Fr.—_camphor._ =Pileus= 1–2 in. across, _brown_-brick-red, _somewhat zoned, sometimes zoneless_, fleshy, thin, depressed, dry, smooth. =Stem= short, 1–2 in., stuffed, somewhat undulated, of the same color as the pileus. =Gills= adnate, crowded, _yellowish-brick-color_. =Milk= mild, white, odor agreeable, spicy. _Fries._ _Strong smelling._ So like L. subdulcis that it can be distinguished safely only by its odor of melilot when dried. _Stevenson._ =Pileus= .5–1.5 in. broad. =Stem= 1–2 in. long, 2–3 lines. _Peck_, 38th Rep. N.Y. State Bot. =Spores= spherical, echinulate, 6–7µ _Q._; subglobose, 8–9µ _Massee_; 7.6–9µ _Peck_. Taste and smell not of camphor, but of melilot. North Carolina, _Curtis_; South Carolina, _Ravenel_; Wisconsin, _Bundy_; New York, _Peck_, Rep. 23, Mon. 38th Rep. West Virginia, Pennsylvania, July to October, in moist places. Mixed woods, etc. _McIlvaine._ Edible. _Gillet._ Its mild taste distinguishes it at once from L. rufus. It has high but pleasant flavor. If the flavor is too evident to suit some tastes, it is well to mix milder species with it. [Illustration: Grouped by F.D. Briscoe—Studies by C. McIlvaine. PLATE XLIV.]