The only species in this genus known to be poisonous to some persons is L. Morgani Pk., which is distinguished by its green spores and white gills becoming green. L. Vittadini has also been regarded with suspicion. ANALYSIS OF TRIBES. _A._ PILEUS DRY. PROCERI (_L. procera_). Page 35. =Ring= movable. The plant is at first entirely enclosed in a universal veil, which splits around at the base, the lower part disappearing on the bulb, the upper part attached to the pileus breaking up into scales. =Stem= encircled at the top with a cartilaginous collar to which the free, remote gills are attached. CLYPEOLARII (_L. clypeolaria_). Page 39. Ring fixed, attached to the upper portion of the universal veil which _sheaths the stem_ from the base upward, making it downy or scaly below the ring. The remainder of the veil united with the pileus breaking up and becoming downy or scaly. Collar at the apex of stem not so large as in Proceri, hence the gills are not usually so remote. Taste and smell unpleasant, resembling that of radishes. ANNULOSI (_annulus_, a ring). Page 44. Ring _fixed_, somewhat persistent, universal veil closely attached to the pileus. Collar absent or similar in texture to the stem. =Stem=, _not sheathed_. GRANULOSI (_L. granulosa_). Page 49. Pileus _granular or warty_. Universal veil sheathing the stem, at first continuous from the stem to the pileus, finally rupturing, forming a ring nearer the base. Stem not so distinctly different from the pileus as in other sections. MESOMORPHI (_L. mesomorpha_). Small, slender, stem hollow. Pileus _smooth, dry_. _B._ PILEUS VISCID. NEITHER SCALY NOR WARTY. [Illustration: Photographed by Dr. J.R. Weist. PLATE XIII. LEPIOTA PROCERA. ] _A._ PILEUS DRY. PROCE´RI. Ring movable, etc. =L. proce´ra= Scop.—_procerus_, tall. (Plate XIII, p. 34.) Tall Lepiota, Parasol Mushroom, in some localities Pasture Mushroom (a misleading title). The =Flesh= not very thick, soft, permanently white. =Pileus= at first ovate, finally expanded, cuticle soon breaking up into brown scales, excepting upon the umbo, umbo smooth, dark-brown, distinct. The caps vary in shades of brown, sometimes they have a faint tinge of lavender. =Gills= whitish, crowded, narrowing toward the stem, and very remote from it. =Stem= variable in length, often very long, tubular, at first stuffed with light fibrils, quite bulbous at base, generally spotted or scaly with peculiar snake-like markings below the ring, which is thick, firm and readily movable. When the stem is removed from pileus it leaves a deep cavity extending nearly to the cuticle. =Pileus= 3–6 in. broad. =Stem= 5–12 in. high, about ½ in. thick. White spores elliptical, 14–18×9–11µ _Peck_; 12–15×8–9µ _Massee_; 14×10µ _Lloyd_.