Parr 4, 1915] AGARICACEAE 277 
116. Marasmius squamula (Batsch) Pennington. 
Agaricus squamule Batsch, Elench. Fung. Contin. 1:95. 1786. 
Helotium melanopus Pers. Te. Descr. Fung. 36. 0. 
?Agaricus epiphyllus Pers. Syn. Fung. 468. 1801. 
Maresmius epiphyllus Fries, Epicr. Myc. 386. 1838. 
Mearasmius subvenosus Peck, Ann. Rep. N. Y. State Cab. 23: 125. 1872. 
Pileus membranous, plane, at length subumbilicate, 2-10 mm. broad; surface plicate, 
rugose, milk-white, often becoming light-brown in age, margin not striate: lamellae adnate, 
few, rather narrow, often vein-like, distant, venose-connected, white: spores 8-9 X 34; 
cystidia awl-shaped, 25-30 X 5 u: stipe equal, inserted, horny, fistulose, brown below, light 
above, pruinose or very slightly velvety, 2-5 cm. long, 0.5-1 mm. thick. 
TyP# LocaLity: England. 
Hasirat: Upon leaves, sticks; etc. 
DistrisvTion: Temperate North America; also in Europe. 
ILLUSTRATIONS: Bull. Herb. Fr. pl. 601, f. 2; Cooke, Brit. Fungi gl. 1137 (1088) A; Sow. Engl. 
Fungi pl. 93; Pers. Ic. Descr. Fung. 2: pl. 9, ie 7 8 (as Helotium melanopus). 
EXSICCATI: Cooke, Fungi Brit. 407; Desmaz. Pl. Crypt. 1413; Ellis, Ev. & Barth. Fungi Columb. 
2231; Rab.-Wint. Fungi Eur. 1204; Roum. Fungi Gall. 3624; Sydow. Myc. Mar. 202; Thiim. Fungi 
Austr. 609; Westend. Herb. Crypt. Belge 586; Beck & Zahlbr. Krypt. 303. 
117. Marasmius nigripes (Schw.) Fries, Epicr. Myc. 383. 1838. 
Agaricus nigripes Schw. Schr. Nat. Ges. Leipzig 1:84. 1822. 
Heliomyces nigripes Morgan, Jour. Myc. 12:93. 1896. 
Pileus membranous, campanulate, umbonate, 6-12 mm. broad; surface white, pruinose, 
pellucid, margin striate: lamellae adnate, broad, white or pallid, becoming dark in dried plants: 
spores angular, 8-9 w: stipe insititious, slightly tapering downward, horny, blackish, white- 
pruinose, becoming brown in dried plants, 3.5—4 cm. long, 1-2 mm. thick. 
TYPE LocaLity: North Carolina. 
Hagirat: Upon vegetable debris in woods. 
Distrisution: North Carolina, New Jersey, Ohio, and Michigan. 
InLustTRATIONS: C. G. Lloyd, Myc. Notes 46. f. 19, 20 
118. Marasmius perforans (Hoffm.) Fries, Epicr. Myc. 385. 1838. 
Agaricus perforans Hoffm. Nom. Fung. 215. 1789. 
Pileus submembranous, plane, not umbilicate, 8-12 mm. broad; surface rugulose, glabrous, 
pallid, margin not striate: context having a stinking odor, not of onions; lamellae adnate, 
many dimidiate, simple, crowded, whitish: spores 6-8 X 2-3 wu: stipe equal, hollow, brownish- 
black, velvety, 2-3 cm. long. 
Tyre Locality: Germany. 
Hapirat: Leaves of Abies, sometimes upon leaves of Sthee trees, 
DIstTRIBUTION: Temperate North America; also in Europ 
ie. 
ILLUSTRATIONS: Cooke, Brit. Fungi pl. 1130 (1085) C; Schaeff. Fung. Bavar. pl. 239 (as 
Agaricus androsaceus). 
Exsiccatr: Roum. Fungi Sel. 6043. 
119. Marasmius praeacutus Ellis, Bull. Torrey Club 6: 76. 1876. 
Pileus membranous, convex to expanded, subumbilicate, 6-10 mm. broad; surface pul- 
verulent, white, the disk red-tinged; margin at first incurved, subsulcate, striate: lamellae 
adnate, more or less forked, hardly crowded, narrow, white: spores 5-6 X 3 u: stipe swollen 
below but contracted to a point at the base, hollow, reddish-brown, white at the base, pulveru- 
lent, 2.5 cm. long, 1 mm. thick. In young plants, the swollen part of the stipe constitutes 
nearly the entire plant. 
TyvPE Locality: Newfield, New Jersey. 
Hapirat: On dead leaves, twigs, and bark. 
DIsTRIBUTION: New York and New Jersey. 
Exsiccatt: Ellis, N. Am. Fungi 402. 
120. Marasmius caricicola C. H. Kauffman, sp. nov. 
Pileus membranous, somewhat tough, pliant, convex-expanded, obtuse, gregarious, 4-8 
mm. broad; surface broadly sulcate or alveolate, pruinose, pure-white: lamellae thick, adnate, 
