406 OUTLINES OF BRITISH FUNGOLOOY. 



Okdkr 28. ONYGENEI. 



Peridiiim formed of closely-intemvovcii threads. Sporidia 

 at length forming a compact, dusty mass. 



319. ONYGENA, P. 



Parasitic on animal substances. Peridium stipitate or ses- 

 sile, paper-like, at length splitting. Asci delicate. Sporidia 

 at length forming a dusty mass. 



1. equina, P.; Grev. t. 3i3. On hoofs, horns, etc. 



2. piligena, Fr. {no. 219). On decaying flannel, etc. 



3. apus, B. and Br. {no. 582). On bones. 



Fam. VI.— physomycetes. 



Threads free, or only slightly felted, bearing vesicles which 

 contain indefinite sporidia. 



Order 29. ANTEJ^mARlEL 



Threads black, more or less felted, moniliform and equal in 

 the same felt, bearing here and there irregular sporangia. 



320. ANTENNARIA, Lk. 

 Threads felted, black, articulated, often moniliform. Walls 

 of sporangia mostly cellular. Spores chained together, im- 

 mersed in gelatinous pulp. 

 1. semiovata, B. and Br. (no. 784, wifk ajii/.). On Filix-nias. 



321. ZASMIDIUM, Fr. 



Sporangium thin, carbonaceous, but brittle, growing on a 

 septate, byssoid, equal mycelium. Mouth subumbilicate. 

 Spores simple. 



