40 
NEW BRITISH FUNGI. 
a rooting base of equal length, or longer, deeply immersed in the 
ground, smooth, white. Gills rounded, emarginate, crowded, 
narrow, yellowish white. 
On grass borders. Alresford, Hants. (Rev. W. L. W. Eyre.) 
Allied to Ag. maculatus. 
Agaricus (Collybia) prolixus, FI. Ban., t. 1608. 
Pileus fleshy, convex, then flattened, gibbous, large, even, smooth ; 
stem solid, rather stout, nearly equal, abrupt at the base, sulcate, 
brick red ; gills free, crowded, quite entire, white, unspotted. — 
Fries. Hym. Eur., 113. 
Amongst dead leaves, &c. Kew Gardens, Oct., 1886. (G. M.) 
Pileus 2-3 in. Stem 4 in. long ; in. thick. 
Agaricus (Pleurotus) ostreatus, Fr. var. columbinus, Bresadola. 
Pileus fleshy, irregular, subrotund, margin involute, plano-con- 
vex, gibbous then umbilicate, margin pigeon-coloured blue, centre 
rather flesh colour, becoming yellowish, smooth (6-10 cm.), umbo 
or umbilicus whitish pilose, stem excentric, lateral, strigose, 
variable in length (to 1 J cm. thick). Flesh white. Gills crowded, 
broad, attenuato-decurrent, anastomosing behind, glaucous, edge 
entire, or delicately fimbriate under a lens. Spores hyaline, ovate 
oblong, trinucleate (10-12 p). — Pleurotus columbinus , Quelet, in 
Bresadola Fungi Tridentini, t. vi. 
On stumps. Kew Gardens. (G. Massee). 
Agaricus (Nolanea) nigripes, Troy, in Flora, 1834, p. 527. 
Pileus submembranaceous, conical then campanulate, obtuse, 
without striae, sprinked with paler flocci, fuscous ; stein fistulose, 
twisted, smooth, black ; gills nearly free, thin, ventricose, yellow 
becoming flesh colour. — Fr. Hym. Fur. p. 207. 
Amongst moss in swamp. Watford. Nov., 1886. 
Stem tough, 4-5 in. long. Pileus 1^ in. broad. Odour of 
putrid fish. Allied to Ag. pisciodorus. 
Agaricus (Naucoria) festivus, Fr. Hym. Fur., 253. 
Pileus fleshy, convex, somewhat gibbous, even, glutinous, 
commonly olive-brown, dirty whitish when dry; stem hollow, a 
little rooting, variously coloured ; gills free, ventricose, crowded, 
becoming ferruginous. — Bres. Fungi Trident., t. 22. 
Amongst grass. Carshalton, Sept., 1886. (G. M.). 
Stem 2 in. or more long ; 2-4 lines thick. Pileus 1-2 in. broad. 
Agaricus (Inocybe) perlatus, Cooke sp. nov. 
Pileus fleshy, convex, then expanded, broadly umbonate, longi- 
tudinally fibrous (3-4 in. diam.), with darker fibrils, fuscous, margin 
paler, incurved, disc dark bistre , nearly black . Stem solid, equal, 
straight or curved, sometimes twisted (3-4 in. X j in.), striate, 
dark below when old, pallid and mealy above, flesh dirty white ; 
gills adnexed, somewhat rounded behind, rather broad, pallid, then 
umber. Spores elliptical, smooth, rather irregular. 
On the ground. Epping Forest : near Oxford. 
Pileus 3-4 in. Stem 4 in. long, |-f in. thick. Allied to Ag. 
fibrosus. 
