Affinities of British Tuheraceae. 261 
Distr. Britain; Italy. 
Choeromyces, Vitt., Mon. Tub., p. 50 (1831); Tub, Hypog., p. 169 (1851); 
Hesse, Hypog. Deutschl., ii, p. 37 (1894); Cooke, Brit. Fung., p. 742 (1871); Sacc., 
Syll. , viii, p. 900 (1889). 
Ascophore closed, with a distinct basal portion, even, often cracked. Gleba with 
numerous branching fine veins, interstices whitish. Asci oblong-ovate with a long 
slender pedicel, 8-spored. Spores globose, warted. 
Distinguished by the distinctly elongated asci containing eight warted, coloured 
spores. 
Choeromyces meandriformis, Vitt., Mon. Tub., p. 51, tab. 2, fig. 1, and tab. 4, 
fig. 10 (1831); Tub, Hypog., p. 170, tab. 19, fig. 7 (1851) ; Cooke, Brit. Fung., 
p. 742, fig. 345 (1871) ; Sacc., Sylb, viii, p. 900 (1889). Rhizopogon meandriformis, 
Corda, Icon. Fung., vi, p. 68, fig. no (1854). Tuber album, Sow., Engl. Fung., 
pi. 310 ( 803). 
Ascophore irregularly globose, often nodulose, smooth, pale yellowish brown, 
becoming much cracked and presenting a tesselated appearance, interstices whitish, 
base plicate, 5-10 cm. diam., flesh white when fresh, becoming yellowish with age. 
Gleba with numerous fine ochraceous veins. Asci ovate or oblong-ovate, tapering 
into a slender pedicel, 8-spored. Spores globose, with numerous elongated blunt 
warts or spines, 21-26 j u diam. including warts. 
Hab. On the ground, often more or less exposed. 
Distr. Britain ; France ; Italy ; Germany ; Bohemia. 
Exsicc. Thiim., Myc. Univ., 1507. 
Smell strong, often grows to a large size. 
Described from a specimen in the Kew herbarium from Vittadini. 
Terfezia, Tub, Ann. Sci. Nat., s 6 r . 3, iii, p. 350(1846); Tub, Expl. Scient. de 
r Alger., Bot. i, p. 435 (1846). Tulasneinia, Zobel, in Cord. Icon. Fung., vi, p. 64 
(1854). 
Ascophore subglobose or irregular in form, furnished with a distinct, short, 
obconic stem-like base, fleshy, not perforated, continuous or variously cracked. 
Gleba fleshy, fertile portion consisting of distinct small masses, sterile portion areolate, 
paler. Asci globose or subglobose, often 8-spored. Spores globose, warted, echinu- 
late or reticulated. 
Distinguished by the distinct, short, stem-like base of the ascophore, globose 
asci, and globose warted spores, so far as British species are concerned. 
Terfezia leonis, Tub, Expl. Scient. de 1’ Alger., Bot. i, p. 432, pi. 24, figs. 22-30 
(1846); Tub, Hypog., p. 173, pi. 7, fig. 5, and pb 15, fig. 3 (1851). Tulasneina 
leonis, Zobel, in Corda’s Icon. Fung., vi, p. 64 (1854). Tuber niveum , Vitt., Mon. 
Tub., p. 47 (1831). 
Ascophore subglobose or piriform, often very large, with a short obconic base, 
whitish, becoming stained and discoloured with age, 4-10 cm. diam. Gleba whitish, 
becoming discoloured. Asci large, globose or very broadly elliptical, 8-spored. 
Spores globose, coarsely nodulose, remaining colourless for a long time, finally slightly 
coloured, 19-25 \x diam. 
Very variable in size ; smell weak, not unpleasant. 
