742 TUBEEACEI. 



of the flesli is apparent throngli it, often cracked ; veins white 

 from a radiating base, in some individuals very few ; sporidia 

 nearly spherical, reticulato-echiniilate ; odour of the radish. — 

 B. ^- Br. Ann. N.II. Aug. 1846. Berk. Outl. p. 376. 



In sandy ground. Hanham, near Bristol, Chudloigh, Asj^ley,- 

 &c. 



2245. Tuber dry ophilum. Tul. " Wood Truffle." 



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 

 interstices, which are given off from different points of the sur- 

 face ; sporidia elliptic and coarsely reticulato-echinulate. — Tul. 

 Hyp. t. 5,/. 3, t. 19,/. 8. B. ^ Br. Ann. Nat. Hist. Aug. 1846. 

 Berk. Outl. p. 376. 



In woods. Aug. — Oct. King's Cliffe, Chudleigh, Bristol, 



&c. 



Spores *023 m.m. long, '016 m.m. broad, others •038-*045 m.m. long, '032- 

 •035 m.m. broad. 



Oen. 310. CHOZROl^EYCES, Yitt. 



Common integument even; base definite ; asci 

 clavate ; sporidia spherical. — Vitt. Tub.p. bO. Tul. 

 Hyp. p. 170. Berk. Outl. p. 377. (Fig. 345.) 



Fig. 845. 



2246. Choiromyces meandriformis. Vitt. " Veined Choiro- 



myces." 



Variable, globoso-mammose, even, pale chestnut colour; fis- 

 sures broad, whitish brown, tesselated ; base plicate, rugose ; 

 flesh white, when dry yellowish ; veins numerous, meandering, 

 ochraceous.— Fi«. Tub. t. 2,/. 1, t. HJ. 10. Tul. Hyp. t. 19,/. 7. 

 Corda. 7c. vi. t. 13,/ 110. B. ^ Br. Ann. N.H. xviii. ;?. 80. 

 Tuber album, Sow. t.UO. Bull. t. 404 ? 



In the ground. Highgate, 1860. 



Sometimes of considerable size; the specimen found at Highgate was not 

 less than 4 inches in diameter, and certainly had a very strong odour. Sporidia 

 Bpherical, echinulate, '019-'U22 m.m. diameter. (Fig. 345 sjioridium.) 



