78 Messrs. Berkeley and Broome on British Hypogaous Fungi. 



8. Genea verrucosa, Vitt. ! /. c. p. 28. Bowood Park, King's 

 Cliffe. 



This is distinguished from the species of Klotzsch by the more 

 minute sporidia, their minor axis being only half the size of that 

 in the following species. Two specimens only have at present 

 occurred in England, the remainder belonging to G. Klotzschii, 

 and one perhaps to Genea sphcerica, Tul., but on this further in- 

 formation is desirable. In all the species the sporidia when seen 

 laterally are really elliptic. Genea bombycina is now referred by 

 Messrs. Tulasne to a new genus which they have named Stephen- 

 sia. The true locality of this species is Castle Combe : it has also 

 been found at Chudleigh. 



9. G. Klotzschii, Berk, and Broome. Foetida; peridio subplicato 

 intruso extus intusque verrucoso nigro ; subtus fibrillis radican- 

 tibus parcis rigidiusculis fuscis affixo; mycelio effuso candido 

 araneoso-contexto ; sporidiis majoribus tuberculatis. G. verru* 

 cosa, Kl. ! Fl. Regn. Bor. no. 474. Hydnocaryon fragrans, 

 Wall. ! Fl. Crypt. Germ. p. 86. Abundant in the neighbourhood 

 of Bristol and in Devonshire. 



The mycelium spreads for some distance on or within the soil, 

 so that the plant is easily detected when the leaves are raked off. 

 This vanishes when the peridia are perfect. One or more indi- 

 viduals are found in each patch of mycelium. In the young pe- 

 . ridium the point of attachment is lateral, as in the eggs of some 

 insects and in some specimens of Pachyphlceus melanoxanthus. The 

 sporidia are large, coarsely granulated, and much exceeding in 

 volume those of G. verrucosa, which does not seem to have the 

 same kind of mycelium ; at least no notice of it is taken by Vit- 

 tadini. 



10. Hydnobolites cerebriformis, Tul. ! Ann. d. Sc. Nat. /. c. 

 p. 379. Abundant about Bristol, Aug., Sept. ; Pangbourne, 

 Wilts. 



This is a small species resembling a small lacunose truffle, but 

 differs in having no real peridium, as is the case with the genus 

 now to be described. 



Hydnotrya, Berk, and Broome. Peridium nullum ; substantia 

 carnosa compacta similis extus anfractuosa exarata, intus sinu- 

 bus serpentinis magnis fungi ad superficiem apertis varie pertusa 

 filamentis flexuosis mollibus brevibus vestitis. Asci elongati 

 lineares obtusi substantia laxe cellulosa serie unica nidulantes, 

 sporidia octo sphserica reticulata sed non echinata foventes. Fungi 

 globosi, edules. 



*H. Tulasnei, Berk, and Broome. Hydnobolites Tulasnei, Berk. 

 Ann. of Nat. Hist. vol. xiii. p. 357. 



Fine individuals of this species, 2 inches or more in diameter, 

 have been found at Chudleigh. Having now had an opportu- 



