British Gastromycetes. 45 
Hymenogaster citrinus, Vitt. (Fig. 8). Rotundato-gibbous ; 
shining as if silky, lemon or golden yellow, then rufous-black ; 
same colour inside, substance firm, spores lanceolate, apiculate, 
rugulose, reddish-brown, opaque, 40 x 17-20 /x. 
Hymenogaster citrinus, Vitt., Mon. Tub. 21, t. iii, f. 2, and 
t. v, f. 9, h ; Tul., Ann. Sci. Nat. ser. 2, xix, p. 374, ph xvii, 
f. 9, 10 ; Tub, Fung. Hypog. 69, t. i, f. 1, and t. x, f. 3 ; Berk., 
Outl. 296 ; Cke., Hdbk. n. 1057 ; Fr., Summa Veg. Sc. p. 436 ; 
Wint., Kr. Fb 875 ; Quel., Enchirid. 248 ; Sacc., Syll. vii, 
p. 169. 
Splanchnomyces citrinus , Corda, Ic. Fung, vi, t. ix, f. 87. 
Exs. — Berk., Brit. Fung. fasc. 4, n. 284 ; Rab., Fung. Eur. 
n- 34- 
Rudloe ! Blaize Castle ! Audley End, Wilts !— Europe. 
Size variable, from that of a hazel-nut to a walnut, sub- 
globose, variously sulcate and deformed. The yellow veins, 
subfusiform, rough, dark-coloured spores, the frequently 
coloured sporophores, and the cheese-like scent, which com- 
municates itself to everything near, are the criterions of this 
species. When young it is of a greenish yellow, but this soon 
wears off when rubbed, or exposed to the air. The sporo- 
phores occasionally become of a much darker colour than the 
neighbouring cells, and have a resinous appearance. (M. J. B.) 
Hymenogaster olivaeeus, Vitt. (Fig. 16). Angularly glo- 
bose, peridium at first silky, whitish, becoming rufescent when 
touched ; substance whitish at first, then passing through 
buff to rufous olive, septa white ; spores broadly fusiform, 
mucronate, pedicellate, brown, generally quite smooth, 
25-3° x 1 3-14 /x. 
Hymenogaster olivaeeus , Vitt., Mon. Tub. p. 24, tab. v, 
f. 9, c (spores) ; Berk., Ann. Nat. Hist, xiii, p. 348, and xviii, 
p. 73 ; Berk., Outl. 296; Cke., Hdbk. 1060; Quel., Enchirid. 
249 ; Wint., Kr. Fb 876 ; Sacc. Syll. vii, p. 172. 
Exs. — Hymenogaster populetorum , Berk., Brit. Fung, 
no. 304. 
In woods. Common in the West of England. Clifton ! 
