IV] 



PEZIZALES 



In several other members of the Pezizaceae, for example in Peziza 

 vesiculosa (Eraser and Welsford) and Peziza tectoria, development appa- 

 rently takes place, as in Humaria rutilans, without the formation of sexual 

 organs. 



In Otidea aurantia (Eraser and Welsford), a large cell, no doubt part of 

 an archicarp, has been recorded in the early stages, and in Peziza thele- 

 boloides, Humaria Roumegueri, and H. carbonigena, there is a well-marked 

 oogonial region of one or more cells. 



Fig. 72. Humaria rutilans (Fr.) Sacc.; a. telophase of second division in ascus, 

 x 3370 ; b. prophase of third division in ascus, showing sixteen curved chromo- 

 somes, x 2808. 



Fig. 73. Humaria rutilans (Fr.) Sacc.; a. meta- 

 phase of third division in ascus, x 2080 ; b. polar 

 view of telophase of third division in ascus, 

 showing eight curved chromosomes, x 3100. 



Fig. y 4 . Humaria rutilans; telo- 

 phase of third division in ascus; 

 after Guilliermond. 



82 



