=L. insul´sus= Fr.—tasteless. =Pileus= 2–4 in. broad, convex and umbilicate, then funnel-shaped, glabrous, viscid, _more or less zonate, yellowish_, the margin naked. =Gills= thin, close, adnate or decurrent, some of them forked at the base, whitish or pallid. =Stem= 1–2 in. long, 4–6 lines thick, equal or slightly tapering downward, stuffed or hollow, whitish or yellowish, generally spotted. =Spores= 7.6–9µ. =Milk= white, taste acrid. Thin woods and open, grassy places. Greenbush and Sandlake, N.Y. July and August. Our plant has the pileus pale yellow or straw color, and sometimes nearly white, but European forms have been described as having it orange-yellow and brick-red. It is generally, though often obscurely, zonate. The zones are ordinarily more distinct near the margin, where they are occasionally very narrow and close. The milk in the Greenbush specimens had a thin, somewhat watery appearance. _Peck_, 38th Rep. N.Y. State Bot. West Virginia, Pennsylvania, New Jersey. July to September. Common in mixed woods and grassy places. _McIlvaine._ Edible. _Cordier_, _Curtis_. L. insulsus is another peppery member of Lactarius which has suffered unjustly. I have eaten it since 1881, and think it the best of the hot milk species. Its flesh is not as coarse as others, and is of better flavor. There is little difference in quality between it and L. deliciosus. =L. hys´ginus= Fr. _Gr_—a crimson dye. =Pileus= 2–3 in. broad, rigid, at first convex, then nearly plane, umbilicate or slightly depressed, even, viscid, zoneless or rarely obscurely zonate, _reddish-incarnate, tan-color or brownish-red_, becoming paler with age, the thin margin inflexed. =Gills= close, adnate or subdecurrent, whitish, becoming yellowish or cream-colored. =Stem= 1–2 in. long, 4–8 lines thick, equal, glabrous, stuffed or hollow, colored like the pileus, or a little paler, sometimes spotted. =Milk= white, taste acrid. Woods. Sandlake and Canoga, N.Y. July and August. Not common. The reddish hue of the pileus distinguishes this species from its allies. The gluten or viscidity of the pileus in our specimens was rather tenacious and persistent. _Peck_, 38th Rep. N.Y. State Bot. =Spores= subglobose, whitish on black paper, yellowish on white paper, 9–10µ _Peck_; 10×7–8µ _Massee_. Mt. Gretna, Pa., 1897. Mixed woods. August, September. Not very acrid. The entire acridity disappears in cooking. Several specimens were found and eaten, enough to prove it esculent and of good quality. *** PIPERATI. _Pileus dry, etc._ =L. plum´beus= Fr.—like _plumbum_, lead. =Pileus= 2—5 in. broad, compact, convex, then infundibuliform, dry, unpolished _sooty or brownish-black_. =Gills= crowded, white, or yellowish. =Stem= 1.5–3 in. long, 3–6 lines thick, solid, equal, thick. =Milk= white, acrid, _unchangeable_. =Spores= 6.3–7.6µ.