194 



1. Melanogaster variegatus, Tnl., I.e., p. 92, t. ii., f. 4 and t. 

 xii., f. 6. Sow., t. 426. This species occurs chiefly under beech 

 trees. It has been offered for sale in the Bath market luider the 

 name of red truffle. It grew abundantly some years ago in a 

 plantation belonging to Lord Methaen, near Hartham Park. Many 

 of the specimens had been gnawed by mice, which had made runs 

 from one to another under ground. Some of them were cooked and 

 eaten without ill results. It has also occurred at Warleigh. 



2. M. ambignus, Tul., I.e., p. 94, t. ii., f. 5, and t. xii., f. 5. 

 Has been found in various parts of England. Spye Park, 

 Batheaston, &c. It emits a very foetid odour, especially in decay. 



The only two British species. 



Genus 55. Hydnangium.* Wallr. 

 Peridium fleshy or membranaceous ; sterile base none ; cells at 



lirst empty, then filled with spores ; spores echinate. 



1. Hydnangium carotcecolor, B., Ann. Nat. Hist.xiii., 351. Tul., 

 I.C., p. 75, t. xxi., f. 4. Leigh Wood, Bristol. Dr. Stephens. It 

 occurs half buried among the soil among ivy, &e., quite in the shade, 

 and looks like bits of carrot. It was also found in an open exposed 

 part of Ballard Down, near Swanage. 



There is only one British species. 



Genus 56. HYSXEKANGiuM.t Vitt. 

 Peridium indehiscent, distinct, separable ; cells at first empty ; 



substance cartilagineo-glutinous ; spores elliptic, acuminate. 



1, Hysterangium nephriticum, B., Ann. Nat. Hist, xiii., 350. 

 Tul., I.C., p. 82. Leigh Wood, Bristol. This species occurs in stiff 

 clay, often six or eight inches beneath the surface. It is surrounded 

 by a copious white mycelium, which spreads often for a foot or 

 more around the tubers. 



2. H. Thwaitesii, B. and Br., Ann. Nat. Hist, ser. ii., vol. ii., 

 267. Tul., I.C., p. 82. Leigh Wood, Bristol. Sometimes nearly 

 on the surface of the ground, and it appears earlier in the winter 

 than the last. The spores are longer and more pointed. The 



* Hydnangium, from udnon, a truffle, and angos, a cavity, 

 t Hysterangium, from ustera, a hollow, and angos, a cavity. 



