/ 



/ 



ItiO TABULAR ARRANGEMENT 



334. Perithecia membranaceous, immersed, scarcely 



papillate. Sporidia elliptical or oblong, two or 

 four-celled, rarely simple, hyaline or pale. 



Spiijirella, Fr. 



335. Parasitic. Perithecia globose, black, innate, 



slightly prominent. Nucleus firm, at first 

 mouthless, then with a roundish aperture. 



Stigmatea, Fr. 



330. Perithecia globose, black, mouthless, innate, con- 

 cealed by the blackened substance of the leaves, 

 ultimately splitting across. 



Hypospila, Fr. 



337. Nucleus without a perithecium, coloured or black, 

 covered by the transformed substance of the 

 matrix, or immersed therein. Isotiiea, Fr. 



838. Parasitic. Mycelium creeping, black. Perithecia 

 elongated, often branched, composed of con- 

 fluent threads, with the tips often free at the 

 apex. Capnodium, Mont. 



339. Perithecia subcarbonaceous, elliptic, closed, burst- 



ing by a longitudinal Assure. Nucleus and asci 

 diffluent. Dicu^na, Fr. 



Section IV. — Nectriei. 



340. Stroma vertical, fleshy, clavate or capitate. 



Perithecia immersed. Sporidea linear, multi- 

 septate, breaking up into fragments. 



TOEEUBIA, Lev. 



341. Stipitate, with a globose head, produced from a 



sclerotium, fleshy. Asci linear. Sporidia 

 filiform, simple. Claviceps, Tul. 



