PHYCOMYCETOUS AFFINITIES 313 



these in his scheme lie the Gymnoascaceae and other similar 

 forms of the Euascomycetes. 



In another recent classification, that of Gwynne-Vaughan 

 (1922), the Ascomycetes are subdivided into Plectomycetes, 

 Discomycetes, and Pyrenomycetes. The first named group 

 includes the Plectascales, Erysiphales, and Exoascales. The 

 Plectascales are in turn subdivided into Endomycetaceae (includ- 

 ing Dipodascus), Saccharomycetaceae, Gymnoascaceae, and 

 Aspergillaceae. 



The general naiure of those separations indicates clearly the 

 trend of modern thought with respect to the interrelationships of 

 the Ascomycetes. It should be remembered, however, that not 

 all authorities regard the simple forms as primitive. Some read 

 the evidence in reverse order, and derive the simple forms through 

 degeneration from the more complex. The student interested in 

 studying the possible relationships between the Phycomycetes 

 and Ascomycetes must in any case focus his attention on these 

 forms with apparently intermediate types of morphology. 



BIBLIOGRAPHY: HEMIASCOMYCETES 



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Missouri Botan. Gard., 2: 315-376, 1915. 

 Barker, D., The morphology and development of the ascocarp in Monascus. 



Ann. Botany, 17: 167-233, pL 12, IS, 1903. 

 Betts, a. D., a beehive fungus. Pericystis alvei gen. et spec. nov. Ann. 



Botany, 26: 795-799, 1912. 

 Brefeld, O., Untersuchungen aus dem Gesammtegebiete der Mj'kologie 



9:91-118, 4 Vl; 1891. 

 Buren, Gunther von, Zur Biologie und Entwicklungsgeschichte von 



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