HEMIASCOMYCETES 



265 



jecting spines, recalling to mind the appendages arising 

 from the perithecia in members of the Perisporieae. 



FlG. 64. I, Endomyces coprophilns ; 2, Myxotrichum uncinatum, an 

 entire plant ; 3, ascus with eight spores of M. uncinatum ; 4, Gymnoascus 

 Reessii, early stage in the formation of sexual organs ; 5, more advanced 

 stage of fig. 4, showing the sexual organs more twisted round one another ; 

 6 and/, more advanced stages of fig. 4, showing surface views of conjugat- 

 ing cells ; in fig. 6 the two cells are of the same shape and size ; in fig. 7 

 one is larger : both cells are coiled ; 8, Gymnoascus ruber, young stage of 

 reproductive bodies ; 9. older stage of G. ruber, with one cell coiled round 

 the other, and giving origin to ascogenous hyphae. Figs. 4-7 (after Dale). 

 All highly mag. 



The perithecium is very rudimentary, consisting in the 

 most highly differentiated condition of a more or less loose 



