A NKVV AI'l'l.l-: TKI'.I'; tlANKKR. 



-263 



dl-awing of one of the pycnidia in i /, is typical. Text Figure 

 3 is a high-power drawing of the ]>erithecium in i a, showing 

 mature asci, one ascus in which the ascospores are not yet quite 

 mature, several young ascus tubes, paraphyses and ostiolar fila- 

 ments. The lowest two ascospores are uniseriately arranged in 

 the ascus; a cross section of the ascus towards the distal end, 

 however, usually shows three spores in section. The spores are 

 liberated by gelatinization of the ascus walls; as gelatinization 

 takes place, the spores which are grouped towards the end of 

 the ascus become arranged uniseriately. 



Text fig. 4. 



Germination of both ty])es of si)ore takes place readily in 

 nutrient solutions and in distilled water. The pycnospores 

 frequently become septate, and an outer wall becomes visible 

 (Text fig. 3). Text fig. 4, a-ci, shows germinating pycnospores, 

 4 h a germinating ascospore. 



Plates XXIII, XXIV give photomicrographs of stromata, 

 pycnidia and perithecia (XXIII. XXIV a, jjerithecia ; XXIV h, 

 pycnidia). 



Systematic Position of the Fungus: The above characters 

 place the fungus as belonging to the genus Botryosphceria, the 

 second genus of the Melograjnniatacecc, which, in turn, is one 



