Part 5, 1916] AGARICACEAE 367 
rather broad, rather close, adnexed, minutely hairy on the edges, white: spores minute, ellip- 
soid, 4-5 X 2.5-3 wu: stipe slender, hollow, pallid, adorned with a thin, pulverulent pubescence 
of somewhat scattered, whitish hairs, terminating in a fibrillose, radicate base, 2.5-5 cm. long, 
scarcely 1 mm. thick. 
TyPE Locality: Albany County, New York. 
HasrtaT: On buried pine cones. 
DistTRIBUTION: New York. 
57. Gymnopus oculus (Peck) Murrill. 
Agaricus oculus Peck, Ann. Rep. N. Y. State Cab. 23: 84. 1872. 
Agaricus (Collybia) abundans Peck, Ann. Rep. N. Y. State Mus. 29: 38. 1878. 
?Collybia lacerata Quél. Ench. Fung. 33. 1886. 
Collybia abundans Sacc. Syll. Fung.'5: 241. 1887. 
Omphalia oculus Sacc. Syll. Fung. 5: 336. 1887. 
Pileus thin, convex, umbilicate, often papillate, gregarious or somewhat cespitose, very 
abundant, 2-4 em. broad; surface innately-fibrillose, avellaneous, the disk usually darker, 
margin often striate or splitting: lamellae rather narrow, close, adnate, sometimes veiny, 
white: spores subglobose, 4-6 u: stipe furfuraceous to subglabrous, colored like or a little paler 
than the pileus, equal, hollow, often curved, easily splitting, 2.5-5 cm. long, 2-4 mm. thick. 
Type Locality: Adirondack Mountains, New York. 
Hasitat: On decayirig hemlock trunks. 
DISTRIBUTION: Maine, Vermont, New York, and Michigan. 
Exsiceati: Ellis & Ev. Fungi Columb. 1201; Ellis & Ev. N. Am. Fungi 3502. 
58. Gymnopus alcalinolens (Peck) Murrill. 
Collybia alcalinolens Peck, Bull. N. Y. State Mus. 12: 6. 1887. 
Pileus thin, subconic, convex, or nearly plane, gregarious, 1.5-3.5 cm. broad; surface 
glabrous or slightly silky-fibrillose, hygrophanous, dark-brown and sometimes striatulate on 
the margin when moist, grayish-brown or cinereous when dry, shining: context white, the odor 
strong, alkaline; lamellae broad, subdistant, deeply emarginate or adnexed, with a slight 
decurrent tooth, somewhat ventricose, whitish: spores broadly ellipsoid, 7.5-8.7 X 5-6 u: 
stipe shining, glabrous, slightly pruinose at the apex, whitish, hollow, 2.5-5 cm. long, 2-6 
mm. thick. 
TYPE LOCALITY: Sandlake, New York. 
Haaitat: In thin woods and bushy or grassy places. 
DIstriBuTION: New York and New England. 
59. Gymnopus platyphyllus (Pers.) Murrill. 
Aes platyphyllus Pers. Obs. Myc. 1:47. 1796. 
Agaricus repens Fries, Obs. Myc. 1: 14. 1815. 
Collybia platyphylla Quél. Champ. Jura Vosg. 57. 1872. 
Agaricus (Tricholoma) praefoliatus Peck, Ann. Rep. N. Y. State Mus. 32:55. 1880. 
Pileus fleshy but thin and fragile, convex, becoming flattened, obtuse, 7.5-10 cm. broad; 
surface moist in wet weather, more or less streaked with fibrils, commonly grayish-brown but 
varying from whitish to dark-brown, sometimes with the disk darker than the margin: lamellae 
broad, adnexed, usually deeply emarginate or obliquely truncately notched next to the stipe, 
white: spores broadly ellipsoid, 7.5-10X 6-7 uw: stipe stout, fleshy, equal, striate or fibrillose- 
striate, stuffed or hollow, white or whitish, blunt at the base or praemorsely radicate, 7.5-10 
em. long, 8-16 mm. thick. 
TYPE LOCALITY: Europe. 
Hasitat: On much Hoes wood on the ground about old stumps and logs in woods or their 
borders. 
DISTRIBUTION: Canada to Alabama and west to Iowa; also in Europe. 
ILLUSTRATIONS: Bull. Herb. Fr. pl. 594 (as A. erammocephalus); Bull. U. S. Dept. Agric. 175: 
oe _f. 1; Cooke, Brit. Fungi pl. 128 (183); Mem. N. Y. State Mus. 3: pl. 49; Mycologia 7: pl. 158, 
60. Gymnopus trullisatus Murrill, sp. nov. 
Pileus small, rather tough, convex, depressed at the center, gregarious, 1-1.5 cm. broad; 
surface glabrous, moist, nearly white, somewhat striate, margin entire, incurved when young: 
