7i8 



ADDITIONAL EXERCISES 



Fig. 259. — Penicillium spinulosum. a, b, Conidial fructifications, consisting of 

 single verticils of conidiiferous cells; c, conidiiferous cell with chain of conidiospores 

 (smooth); d, f. ripe echinulate conidiospores; c, swollen end of conidiophore; g, h, 

 sketches of conidial fructifications. {Afler Thorn.) 



Tfl 



Fig. 260. — Penicillium rubrum. a, b, c, d, c. Whole conidiophores and the 

 branching of conidial fructifications; /. g, conidiiferous cells and conidiospore forma- 

 tion; h, j, sketch of habit of growth; m, diagrammatic figure of a series of conidial 

 fructifications. lAfUr Thorn.) 



