Messrs. Berkeley and Broome on British Hypogceous Fungi. 81 



gregarious with little odour, rounded, usually about the size of a 

 nutmeg, nearly smooth, white, marked here and there with darker 

 patches. The peridium is thick, hard and tough, easily parting 

 from the flesh, which is firm, reddish brown, with white inter- 

 stices which are given off from different points of the surface. 

 The sporidia are elliptic and coarsely reticulato-echinulate. 



16. Tuber puberulum, Berk, and Broome. Irregulare sublo- 

 batum album, pilis rectis brevibus puberulum dein rufo-albidum 

 hie illic albo-maculatum ; peridio subtenui, venis albis e basi ra- 

 diantibus pulpa fructifera gilva demum rufo-brunnea ; sporidiis 

 subglobosis reticulato-echinatis ; odore raphanoideo. Abundant 

 in the neighbourhood of Hanham near Bristol, Chudleigh, Aspley 

 near Woburn, in sandy districts. 



Gregarious ; clothed with short, erect down, which gives it to 

 the naked eye a peculiar pearly appearance. The white spots are 

 very visible even in dried specimens. Peridium very thin and 

 delicate, so that the pinky brown colour of the flesh is apparent 

 through it, often cracked. In some individuals the veins are very 

 few. Sporidia more nearly spherical than in any species we have 

 had an opportunity of examining. 



17. Elaphomyces anthr -acinus, Vitt. /. c. p. 66. Leigh Wood 

 near Bristol. A single specimen only in clayey soil. 



The original specimens of Vittadini are minutely granulated 

 under a lens, a character which does not appear in our specimen. 

 The sporidia are alike and at once distinguish it from E. macu- 

 latus, the only species with which it can be confounded. The 

 smell is very powerful, in which respect again it does not agree 

 with Vittadinr's species. It is indeed probable that it will prove 

 new, but on the authority of a single individual, not in very good 

 condition, it would be rash to do more than indicate its nearest 

 affinity. The outer rind in the specimen when gathered was 

 black, the inner of a dull yellowish white. 



III. Species Vesiculifer^. 



18. Endogone pisiformis, Lk. Diss. i. p. 33; Fr. Syst. Myc. vol.ii. 

 p. 297. Glomus macrocarpus, Tul. ! Fung. Hyp. /. c. Amongst 

 moss and in the superficial soil. Bristol, Bowood, Chudleigh, fee. 

 Under beech and larch, and in the oak and hazel woods. 



In a young state it is hard, when old less compact and granu- 

 lated. The vesicles are almost visible to the naked eye. A single 

 specimen of some allied species with the vesicles in the young 

 state far larger and connected with each other by short filaments, 

 occurred at King's Cliffe in July 1845. 



19. E. lactiflua, Berk, and Broome. Irregularis depresso-glo- 

 bosa alba dein sordide incarnata, fcetida, intus lacte crasso isa- 



