ORDER PEZIZALES: SUBORDER INOPERCULATAE 



233 



cinerea type. In Stromatinia gladioli (Drayton) Whetzel, F. L. Drayton 

 (1932, 1934) demonstrated that the fungus has two sexual strains, the 

 sperm cells of one strain fertilizing the receptive female organs of the 

 other strain and vice versa. The conidial stage of this genus also belongs 

 to the genus Botrytis. It is probable that all the genera of this family in 

 which "microconidia" are known are of this type of sexual reproduction. 

 (Fig. 80.) 



Fig. 81. Pezizales, Fam- 

 ily Geoglossaceae. (A) Geo- 

 glossum glabrum Pers. ex 

 Fr. (B) Leotia chlorocephala 

 Schw. (Courtesy, Durand: 

 Ann. MycoL, 6(5):387- 

 477.) 



Family Geoglossaceae. This family was formerly associated with 

 the Helvellaceae to form the order Helvellales, before the importance of 

 the type of dehiscence of the asci became apparent. The apothecium is 

 stipitate and the hymenium either forms a closely adherent layer to the 

 somewhat thickened upper part of the stipe or forms the upper surface 

 of a head borne at the apex of the stipe. The spore fruit may be entirely 

 made up of hyphae or the cortex may be pseudoparenchymatous. In spite 

 of the external position of the mature hymenium it is really formed endog- 

 enously, being covered when young as in most genera of the Pezizales 



