ANTENXAEIEI. 627 



Division II. SPORIDIIFERA. Sporidia in asci. 



V. Fertile cells seated on threads, not compacted into a 



hymenium Physomycetes, 



VI. Asci formed from the fertile cells of an hymenium . Ascomyceies. 



Family VI. PHYSOMYCETES. 



Threads free, or only slightly felted, bearing vesicles which, 

 contain indefinite sporidia. — Ber}:. Outl.p. 406. 



Fertile cells bladder-shaped, scattered on the threads, which are not com- 

 pacted so as to form a distinct hymenium. Sporidia indefinite, formed from 

 the protoplasm of the cells.— J/./.i>. 



Threads felted, moniliform — 



Sporangia irregular ...... Antennariei, 



Threads free. 



Sporangia terminal or lateral .... Mucoriai. 



Order XXIII. ANTEXXAPJEI. 



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

 the same felt, bearing here and there irregular sporangia. — 

 Berk. Outl.p. 4.0)^. 



Threads mostly moniliform — 



Spores concatenate Antennaria. 



Threads mycelioid, byssoid — 



Spores simple Zasmidium, 



