IV] 



PEZIZALES 



IIS 



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

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

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

 organs. 



In Otidea aurantia (Fraser 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 

 oosfonial region of one or more cells. 





■ V!-.o'.:- ;•■;; ';•.;./■ i-.^v ■-■■■ 







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

 '^ .3370 ; f>- prophase of third division in ascus, showing sixteen curved chromo- 

 somes, X 2808. 



rig. 73. Humaria rutilans [¥r.)Ssii:c.\ iz. meta- 

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

 view of telophase of third division in ascus, 

 showing eight curved chromosomes, x 3100. 



Fig. 74. Humaria rutilans; telo- 

 phase of third division in ascus; 

 after Guilliermond. 



