British Gastromycetes. 41 
spores narrowly elliptic, smooth, for a long time colourless, 
then pale olive, 8x3^. 
Rhizopogon luteolus , Tul., Giorn. Bot. Ital. ii, 57 5 Fr., 
Syst. Myc. ii. 294 (excl. syn. Mentzelii and Gleditzschii) ; 
Fr., Summ. Veg. Scand. 435 ; Wahlenb., FI. Suec. ii, 997 ; 
Tul., Fung. Hypog. 87, t. i, f. 5, and t. xi, f. 5 ; Karst., Myc. 
Fenn. 354 ; Quel., Enchirid. 246 ; Wint., Kr. FI. 880 ; Sacc., 
Syll. vii, p. 16 1. 
Hysterangium Duriaeanum , Tul., in Chautelat, Cat. pi. 
de la Teste-de-Buch, 75 (Actes de la Soc. Linn, bordelaise, 
xiii, 1844). 
Tuber virens , Alb. et Schw., Cons. Fung. Lusat. 77, 
t. viii, f. 3. 
Exs. — Fuckel, Fung. Rhen. 1250; Roum., Fung. Gall. 
2316: Sydow, Myc. March. 386 ; Klotzsch, 320; Rab., Fung. 
Eur. 570; Moug. and Nest., 1275; Desm., Cr. Fr. ser. 1, 
1513 ; Westendorp Herb., Cr. Belg. 39 ; Rab. (Wint.), Fung. 
Eur. 2940. 
Underground or partly exposed, solitary or gregarious, in 
sandy pine woods, etc. Scotland ! — Europe ; Florida ; Cali- 
fornia ; China; Australia; New Zealand. 
From f-ij in. across, smell at first weak, then strong and 
offensive. Taste insipid. 
Hymenogaster, Tub 
Globose or irregular ; peridium fleshy or thin, simple, 
homogeneous, running down into a sterile base ; cavities of 
gleba at first empty, radiating from the base or irregularly 
scattered ; trama composed of elongated cells, but not of 
byssoid flocci, and therefore not easily separable ; spores 
elliptical or fusiform. 
Hymenogaster , Tul., Fung. Hypog. 63; Vitt., Mon. Tub. 
p. 20 (in part) ; Sacc., Syll. vii, p. 168. 
Splanchnomyces , Corda, Ic. Fung. vi. 
The large elliptical or fusiform, rugulose or nodulose spores, 
cavities of the gleba empty at first, and sterile basal stratum 
of the peridium, mark the genus. 
