ELVELLACEI. 351 



RHIZINA. Fr. 



Sessile ; eft'used like a crust, afterwards bullato-inflated^ 

 determinate ; hymenium occupying the upper surface ; 

 under side furnished with root-like fibrils ; flesh firm, per- 

 sistent ; asci cylindrical ; sporidia 8, large. 



1. R. undulata, Fr.; efl'used, undulate; bay-brown; 

 margin inflexed ; flocculose beneath, and pallid ; asci cylin- 

 drical ; sporidia 8, fusiform, subacute, 2-guttulate, at 

 length pseudo-septate ; 30-35 x 9 mm. ; paraphyses filiform, 

 enlarged and brown at apices, which adhere firmly together. 

 —Schaff. t. 153; Tul. Hyp. t. 21, f. 16; Cur r. Linn. Trans. 

 xxiv. ^.51, /. 7—9. 



On gravelly and sandy soil recently exposed to fire. 

 Ascot Heath. Wrekin. 



2. R. laevigata, Fr. ; orbicular ; even ; brown ; margin 

 prominent ; granulose beneath ; fibrils pallid ; asci cylin- 

 drical ; sporidia 8, fusiform, acuminate, bi-guttulate, uni- 

 seriate, hyaline ; paraphyses filiform. — GrtviUea, ii. /. 22, 



./• 1. 



On stumps. Glamis. 



251. PEZIZA, L. (p. 362). 



The genus Peziza of the Outlines, is now represented by 

 the Order, Pezizee, in two Series : Nudee and Vestita. 

 These Series contain twelve genera and twenty-nine sub- 

 genera, as compared with the eleven subgenera of the 

 Outlines. The sequence of species now diflers from the 

 sequence as given in the Outlines. In the following list of 

 British species, new since the publication of the Outlines, 

 only those species are given which measure an inch or 

 more in diameter. 



