368 



[Vol. 2 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



<^^iy-~ Ascocoriicium 

 \h ^ • Exoascaceaa 



Saccharomycetes 

 Taphridium 



Protomyces 

 ~ Ascoideo 



PROTOASCOMYCETES 



A5C0MYCETES 



PHYCOMYCE.TES 



Fig. 10. Chart showing suggested phylogeny of the Ascomycetes. 



Literature Cited 



Atkinson, Geo. F. ('95). Damping off. Cornell Univ. Agr. Exp. Sta., Bull. 94: 



231-272. pi. 1-6. 1895. 

 Bachmann, Miss F. M. ('12). A new type of spermogonium and fertilization in 



Collema. Ann. Bot. 26: 747-760. pi. 69. 1912. 

 , ('13). The origin and development of the apothecium in Collema pul- 



posum (Bernh.) Ach. Archiv f. Zellforsch. 10:369-430. pi. 30-36. 1913. 



Atkinson, Geo. F. Monograph of the Leraaneaceae of the United States. Ann. Bot. 4 : 177-277, 

 pis, 7-9, 1890. 



