TUBERALES 21S 



among all these subterranean fungi can be established only after 

 further investigation with access to ascocarps in immature 



stages. 



LITERATURE CITED 



BucHOLTZ, F., "Zur Entwickelungsgeschichte der Tuberaceen," Ber. deut. 



botan. Ges., 75:211-226, 1897. 

 "Zur Morphologic und Systematik der Fungi hypogaee," Ann. Mycol.y 



i; 152-174, 1903. 

 "Zur Entwickelungsgeschichte des Balsamieenfruchtkorpers, nebst Bemerk- 



ungen zu \"er\vandschaft der Tuberineen," Ann. My col., 8: 121-141, 



1910. 

 Dangeard, p. a., "La truffe," Botaniste, 4:63-87, 1894. 

 GiLKEY, Helen AL, "A revision of the Tuberales of California," Ufiiv. 



Calif. Fiibl. Bot., 6:275-356, 1916. 

 "Tuberales of North America," Oregon State Monographs, 1. 63 pp. 



1939. 

 Massee, George, "The structure and affinities of the British Tuberaceae," 



Ann. Botany, 23: 243-263, 1909. 

 Parks, H. E., "California hypogaeous fungi-Tuberaceae," Mycol., 13: 301- 



314, 1920. 



