338 



COMPARATIVE MORPHOLOGY OF FUNGI 



farfuraceus) and A. ?nagnificus, which develop gymnocarpously like the 

 Pyronemaceae. 



Furthermore, for the Ascobolaceae-Pezizaceae group various imper- 

 fect forms have been reported, while these appear to be absent in the 

 Pyronemaceae. Thus Ascobolus denudatas, A. citrinus and Lasiobolus 

 pulcherrimus have oidia, A. carbonarius small conidia on hyphal branches, 

 others, chiefly the forms of Pezizaceae, have true ample conidiophores; 

 in Pustularia vesiculosa, Aleuria asterigma, (Peziza asterigma), Plicaria 

 ampliata and P. repanda, these conidiophores appear like those of the 



Fig. 225. — Ascobolus magnificus. Development of sexual organs. 1. Peculiar prolif- 

 eration of hyphae. 2. Formation of sexual organs. 3 to 5. Types of copulation. 6, 7. 

 Beginning of ascogenous hyphae. (.After B. O. Dodge, 1920.) 



Zygomycetous SyncephaUs and the Polyporaceous Fomes annosus, and 

 are swollen terminally to small heads which cut off simultaneously 

 hyaline ovoid conidia on short sterigmata; in Lachnea abundans, (L. 

 cretea), they correspond rather to the Botrytis type (B. 0. Dodge, 1922; 

 [Fraser] Gwynne-Vaughan and Williamson, 1927). Ascobolus magnificus, 

 as in species of Melanospora, produces bulbils which correspond to the 

 imperfect, Papulaspora. 



Ascobolaceae. — The ontogeny of both the Ascobolaceae and Peziza- 

 ceae connects directly to the Pyronemaceae and continues the tendencies 

 described for this family. Thus the sexual organs of Ascobolus vinosus 

 and A. macrosporus (Schweizer, 1923) agree entirely with those of 



