167 
H——— sclerotioides B. Bristol, A. Leipner, Esq., in a flower 
pot. C. Bucknall, l.c., Vol. ii, p. 348. 
H——— (Lophodermium) Neesii Duby. The Gully, January, 
1882. C. Bucknall, lc. v., 6 
ORDER 25. TUBERACEI. 
Hypogzous ; hymenium waved and sinuate, often intricate and 
‘closely packed, 
GENUS 276. TUBER.* Mich. 
Asci short, saccate, disposed in sinuous veins ; sporidia elliptic, 
reticulate, often echinulate ; peridium warty or tubercled, rarely 
‘smooth, without any definite base. 
T. brumale Mich. Batheaston, Corsham Park, November. 
T—— estivum Viit. Our common eatable truffle. Batheaston. 
Bathford, Combe Hay, Castle Combe, &c., under beech and 
hazel, Autumn and Winter, on chalk or limestone soils. 
a. macrosporum Vitt, Near Bristol and Batheaston, chiefly 
under oak trees, Autumn, This species has a strong odour 
of garlic. It is not much eaten in Italy on account of its 
small size and thick rind ; it is too scarce in England to be 
in culinary use. 
T—— bituminatum B. and Br. Annals Nat. Hist., No. 581. 
M. Talasne considers this to be T. mesentericum Vitt, but 
he does not describe the peculiar odour, merely saying, “ odor 
gravis.” The odour in our plant is pungent, resembling that 
of horse-radish or tar. In sandy ground under beech trees, 
Bowood, Autumn. 
T——-rufum Pico. Batheaston, near Bristol, &c. Not uncommon, 
chiefly in fir woods, or where there is a mixture of fir trees. 
It is not used for food. Autumn and Winter. 
T—— scleroneuron B..and Br. Annals Nat. Hist., No: 582, 
Tulasne considers this plant too close to T—— rufum Vité to 
* From Tuber, a Latin name for some fungus. 
