OF BRITISH FUNQI. 151 



Family VI. 

 ASCOMYCETES, or HELVELLACE.EJ. 



Sporidia generally eight together, contained in a case 

 or ascus. 



Order XXV.-ELVELLACEI. 



Substance soft; hymenium at length exposed. 



Genera. 



258. Receptacle clavate or pileate. Hymenium folded 



and pitted. Morchella, Dill. 



259. Eeceptacle inflated, rough with raised ribs. 



Gyromitra, Fr. 



2G0. Eeceptacle pileate, barren below. Hymenium 

 even. Helvella, Link. 



201. Eeceptacle clavate or conical. Hymenium rugu- 

 lose or nearly even. Verpa, Schwartz. 



262. Fleshy, capitate. Hymenium surrounding the 



inflated head. Mitrula, Fr. 



263. Eeceptacle capitate, compressed, running down 



either side of the stem. 



Spathtjlaria, Pers. 

 204. Eeceptacle pileate, margin revolute, covered every- 

 where with the smooth viscid hymenium. 



Leotia, Hill. 



265. Receptacle capitate, margin adnate. Asci and 

 spures ejected, rendering the hymenium vel- 

 vety. VlBBISSEA, Fr 



vt 



