HYMENOMYCETES 
IT 4 
5 . 2-4 in., stout, whitish, solid. F. white, yellowish at the 
base. R. indistinct. Common in ant. in pine woods. 
G. viscidus (“ Rhubarb-stem ”) differs in the umbonate pileus 
and pale yellowish-brown flesh; the stem is rhubarb colour 
within and without. G. roseus may be known by the bright 
rose-red or dark crimson-red pileus. 
PORPHYROSPOILE 
Spores purple-black. Gills black or brown, with a purple 
tinge at maturity. 
PSATHYRA 
(Gr. psathuros, friable—from the friable substance) 
P. corrugis {ruga, a wrinkle). Plate XXXVIII. 4. 
P. 1-2 in., submembranaceous, bell-shaped, umbonate, 
corrugated when dry, very pale ochre, often tinged with 
pink. G. sinuate, adnexed, broad, violet-black. S. 2-3 in., 
slender, equal, smooth, white, hollow. Frequent in pastures, 
appearing in April. 
P. mastiger (Gr. mastos, the breast; gero , I bear—from the 
breast-like shape), a common species amongst grass by road¬ 
sides, is easily distinguished by the mammiform umbo, and 
the rich brown colour when moist. 
PSILOCYBE 
(Gr. psilos, naked; kube, a head—from the naked pileus) 
P. spadicea ( spadicens , date-brown—the colour of the pileus). 
Plate XXXVIII. 1. 
P. 1-3 in., plane at maturity, hygrophanous, bay-brown 
when moist, pallid when dry. G. adnexed, rounded behind, 
dry, crowded, pale at first, rosy-brown at maturity. Spores 
brown. S. 2-4 in., slender, equal, whitish, smooth, hollow. 
