254 Mas see. — The Structure and 
ascophore is covered with sinuous folds resembling a brain, which suggested the 
specific name. 
Hydnotrya, Berk. and Br., Ann. Nat. Hist., xviii, p. 78 (1846); Cooke, Brit. 
Fung., p. 745 (1871); Sacc., Syll., viii, p. 879 (1889). 
Ascophore perforated, minutely warted or velvety, cavities of gleba wavy or 
sinuous, often opening to the surface. Aset irregularly elliptic-oblong. Spores 
globose. 
Hydnotrya Tulasnei, Berk, and Br., Ann. Nat. Hist., xviii, p. 78 (1846); 
Cooke, Brit. Fung., p. 745 (1871); Sacc., Syll., viii, p. 879 (1889); Hydnoholites 
Tulasnei , Berk, and Br.. Ann. Nat. Hist., xiii, p. 357 (1844). 
Ascophore globoso-depressed, base plicate, with perforations, minutely velvety, 
rufous, 2-5-6 cm. diam., walls of the tortuous cavities white, pubescent. Aset 
irregularly elliptic-oblong with a long pedicel, 8-spored. Spores globose, amber- 
brown and coarsely tuberculated when mature, 25-35 M diam. 
Hah. Sandy soil. 
Distr . Britain. 
Exsicc . Berk., Brit. Fung, (as Hydnoholites Tulasnei ), 302 ; Roumeg., Fung. 
Gall., 2219; Rab., Herb. Mycol., ed. ii, 301. 
Smell weak. The colour of the ascophore is somewhat variable, but is always 
some shade of rusty brown or tawny, sometimes with a more or less decided tinge of 
vermilion. Berkeley describes the spores as reticulated, but examination of his own 
material shows them to be coarsely warted. Saccardo has repeated this mistake. 
Superficially closely resembling Balsamia vulgaris , Vitt., especially when dry. 
Type specimen in the Kew herbarium examined. 
Stephensia, Tub, Comp, rend., xxi, p. 1433 (1845); Cooke, Brit. Fung., 
p- 745 (1871) ; Sacc., Syll., viii, p. 880 (1889). Genea, in part, Vitt., Mon. Tub., 
p. 29 (1831). 
Ascophore irregularly globose, more or less depressed. Gleha with tortuous 
dissepiments or veins, becoming cavernose, deliquescent. Asci cylindrical, 8-spored. 
Spores uniseriate, globose, smooth, colourless. 
Readily distinguished by the smooth, colourless, globose spores arranged 
in a single row in the elongated cylindrical ascus. 
Stephensia bombycina, Tub, Hypog., p. 130, pb 11, fig. 4 (1851); Cooke, 
Brit. Fung., p. 745, fig. 348 (1871); Sacc., Syll., p. 880 (1889); Genea homhycina , 
Vitt., Mon. Tub., p. 29, tab. 3, fig. 19; tab. 4, fig. 8 (1831). 
Ascophore subglobose, depressed, often very irregular in form, lobed or with 
sinuous folds, indented more or less at the base, rather soft, floccose or minutely 
downy, whitish or with a yellow tinge, 3-6 cm. diam. Gleha whitish with yellow 
sinuous dissepiments. A sci cylindrical, 8-spored. Spores uniseriate, smooth, globose, 
colourless, 18-23 /*• 
Smell at first pleasant, soon becoming very disagreeable and strong, resembling 
that of Melanogaster amhiguus, Tub Specimen from Tulasne, in Herb. Kew., 
examined. 
Hah. Subterranean. 
Distr. Britain; France; Italy; United States. 
