Order IV. SPH^RIACB^. 



Perithecia carbonaceous or membranaceous, sometimes con- 

 fluent with the stroma, pierced at the apex, and mostly papil- 

 late ; hymenium diffluent. — Berkeley Outlines. 



This natural order consists mostly of the pyrenomycetes 

 fungi. The genera are divided into four tribes, viz : 



Nectri^i. 

 Xyi^ari^ei. 

 Valsei. 

 Sph^riei. 



Genus XI. NBCTRIA. Fr. 



Perithecia free, clustered or scattered, colored, fleshy or 

 horny. 



Asci, eight or many spored ; sporidia of two kinds. 



N. cinnabarina. Fr. Vermilion Nectria. 



Conidia spores are produced on Tubercularia vulgare. 



Ascophore caespitose, perithecia globose, corrugated, ver- 

 milion, at length brownish, osteola papillaeform ; sporidia 

 uniseptate. 



On currant bushes, frequently together with Tubercularia vulgare. 



Genus XII. HYPOMYCES. Tul. 

 Parasitic on fungi ; mycelium byssoid ; perithecia small. 

 Asci eight-spored. Only one species is known to me. 



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