Parr 4, 1915] AGARICACEAE 239 
4, Pleurotopsis liliputiana (Mont.) Murrill. 
Agaricus (Pleurotus) liliputianus Mont. Ann. Sci. Nat. IV. 1:99. 1854. 
Marasmius nidulus Berk. & Curt. Jour. Linn. Soc. 10: 299. 1868. 
Pileus resupinate, at first Peziza-like, becoming free on one side, 2-6 mm. broad; surface 
snow-white, pruinose-floccose: lamellae few, thick, plane or ventricose, interspaces smooth: 
stipe pruinose, very short or none, pileus often attached by the vertex. 
TYPE Loca.ity: French Guiana. 
Hasirar: On fallen sticks in woods. . 
DisTRIBuTION: Mexico, British Honduras, Cuba, and Guadeloupe; also in South America. 
5. Pleurotopsis eeurifoliy (Pat.) Murrill. 
Crinipellis asperifolia Pat. Jour. de Bot. 3: 336. 1889. 
Pileus sessile, resupinate or reflexed, solitary to gregarious, 5-10 mm. broad; surface dry, 
striate entirely to the center, pale-brownish, decorated with very long, colorless, tenacious, 
cylindric fibers, margin thin, entire, concolorous: lamellae distant, dry, concolorous or slightly 
paler, attenuate at both ends, unequal, radiating from the tubercular attachment of the pileus: 
cystidia abundant, club-shaped, projecting, rugose at the apex from incrustations of oxalate of 
lime. 
TYPE LocaLity: Martinique. 
Hasirat: On bark at the base of a living Murraya exotica. 
DisTRIBUTION: Martinique and Guadeloupe. 
ILLUSTRATION: Jour. de Bot. 3: p. 337. 
14, SCYTINOTUS P. Karst. Bidr. Finl. Nat. Folk 32: 97. 1879. 
Pileus coriaceous, of homogeneous texture, reviving, sessile, at first resupinate: lamellae 
radiating from a central or eccentric point, not splitting on the edges: spores hyaline: veil none, 
Type species, Scytinotus ringens (Fries) P. Karst. 
Pileus and lamellae white or yellowish. 1. S, distantifolius 
Pileus and lamellae isabelline. 2. S. concolor. 
Pileus and lamellae blood-red. 3. S. haematodes. 
1. Scytinotus distantifolius Murrill, sp. nov. 
Pileus at first resupinate, becoming sessile and conchate, slightly imbricate at times, 
5-10 mm. broad; sutface smooth, white, pruinose to glabrous, margin concolorous, entire to 
somewhat lobed, inflexed on drying: context thin, white, coriaceous; lamellae radiating from 
the point of attachment, very distant, somewhat venose-connected, rather broad, irregular, 
yellowish, the edges firm, entire. 
Type collected on dead sticks at Rio Piedras, Porto Rico, May 25, 1913, John R. Johnston 927 
(berb. N. Y. Bot. Gard.). 
DistTRIBUTION: Porto Rico and Vera Cruz. 
2. Scytinotus concolor (Berk. & Curt.) Murrill. 
Marasmius concolor Berk. & Curt. Jour. Linn. Soc. 10: 299. 1868. 
Pileus firm, dry, irregular, helmet-shaped, sessile, gregarious, 2-8 mm. broad; surface 
pulverulent to glabrous, striate-furrowed when fresh, pale-avellaneous-isabelline to pale-fulvous, 
margin lobed, concolorous: lamellae few, broad, tough, isabelline, curved, inserted, rarely 
forked, not interveined, radiating from an eccentric point. 
TyP# LocALITy: Cuba. se 
Hasirat: On dead sticks and rarely on leaves in woods. 
DISTRIBUTION: Cuba, Jamaica, and Guadeloupe. 
3. Scytinotus haematodes (Berk. & Curt.) Murrill. 
Marasmius haematodes Berk. & Curt. Jour. Linn. Soc. 10: 299, 1868.~ : : 
Pileus helmet-shaped, rigid, 2 mm. broad; surface blood-red-liver-colored, glabrous: 
lamellae vein-like, thick, concolorous: stipe none. 
‘TYPE LOCALITY: Cuba. 
Hasirtat: On dead sticks. 
DISTRIBUTION: Known only from the type locality. 
