Part 5, 1916] AGARICACEAE 309 
Pleurotus pubescens Peck, Ann. Rep. N. Y. State Mus. 44: 130. 1892. Described from 
specimens collected on trunks of trees at Lyndonville, New York, by Fairman. ‘The single 
type specimen is preserved at Albany and proves to be a peculiar, tomentose form of Lentinula 
reticeps (Mont.) Murrill, in which the reticulations are confined to the margin of the pileus. 
The specimen is somewhat molded, but this does not appear to account for the tomentum. 
Pleurotus sulfureoides (Peck) Sacc. Syll. Fung. 5: 345. 1887. (Agaricus sulfurecides Peck, 
Ann. Rep. N. Y. State Cab. 23: 86. 1872.) Described from specimens collected on an old 
log in woods in the Catskill Mountains, New York. This probably belongs in Cortinellus. 
Pleurotus tessellatus (Bull.) Quél. Ench. Fung. 147. 1886. (Agaricus tessellatus Bull. 
Herb. Fr. pl. 513, f. 1. 1791.) Reported from North Carolina by Schweinitz. 
Pleurotus terresiris Peck, Bull. N. Y. State Mus. 116: 29. 1907. Type collected on the 
ground in the margin of woods at West Fort Ann, New York, by Burnham. ‘The lamellae 
are described as emarginate and the stipe as eccentric. The type specimens cannot be located 
at Albany under Pleurotus, and the species probably belongs elsewhere. 
Pleurotus umbonatus Peck, Bull. Torrey Club 32:77. 1905. Described from specimens 
collected on the ground at Kittanning, Pennsylvania. This species appears to belong rather 
in Cortinellus than in Micromphale. ‘There are good specimens at Albany. 
31. LEPTOMYCES Mont. Syll. Crypt. 128. 1856. 
Agaricus § Hiatula Fries, Nova ‘Acta Soc. Sci. Upsal. III. 1: 27. 1851. 
Hiatula Sacc. Sylt. Fung. 5: 305. 1887. 
Leucoprinus Pat. Bull. Soc. Myc. Fr. 4: 26. 1888. 
Pileus membranous, plicate-sulcate, splitting down the backs of the lamellae, margin 
appressed to the stipe when young: lamellae free or attached: spores hyaline: stipe central, 
slender, tubular, with cartilaginous cortex: veil none. 
Type species, Lepiomyces lignifragus Mont. 
Stipe conic, 15 mm, at the base and 4 mm. at the apex. 
Stipe equal. 
Pileus less than 1 cm. broad. 
Pileus 2 cm. or more broad. 
Lamellae attached. 
Lamellae free. 
Pileus plane, pale-purple. 
Pileus bell-shaped, reddish-brown. 
L. discretus. 
LL, minimus. 
. ciliatulus. 
ve YN op 
L 
L. purpurascens. 
L. Benzonii. 
1. Leptomyces discretus (Fries) Murrill. 
Agaricus discretus Fries, Flench. Fung. 1: 20. 1828. 
Pileus thin, conic, umbonate, solitary; surface white, margin densely striate: lamellae 
free with a remote collar, crowded, white: stipe conic-ventricose, glabrous, white, hollow, 
4-5 cm. long, 1.5 cm. thick at the base, 4 mm. thick at the apex. 
Type LocaLiry: Santa Cruz Island. : 
DiIstRIBUTION: Known only from the type locality. 
2. Leptomyces minimus (Berk.) Murrill. 
Hiatula minima Berk. Ann. Mag. Nat. Hist. II. 9: 193. 1852. 
Pileus umbilicate, 8 mm. broad; surface light-gray, striate, margin crenate: lamellae 
forking, remote, plane: stipe slender, paler than the pileus. 
Tyee Locality: Santo Domingo. . 
DistRiBuTIoN: Known only from the type locality. 
3. Leptomyces ciliatulus (Fries) Murrill. 
Agaricus (Hiatula) ciléatulus Fries, Nova Acta Soc. Sci. Upsal. III. 1: 27. 1851. 
Pileus very thin, membranous, campanulate-convex, obtuse, 2.5 cm. broad; surface 
pellucid, cinereous, margin radiate-plicate, ciliatulate, at first incurved: lamellae distant, 
white, adnexed, the alternate ones shorter and the long ones flexuous: stipe equal, glabrous, 
hollow, white, fuscous at the base, 2.5 cm. long, 2 mm. thick. 
TYPE LocaLity: Costa Rica. 
Hasirat: On rotten wood. ‘ 
DistRisutIoN: Known only from the type locality. 
