720 



ADDITIONAL EXERCISES 



4. Powdery, yellowish-white, spores tubeiculate, ammoniacal odor. P, 

 brevicaule var. album. 



5. Forming yellowish-brown areas, spores rough, ammoniacal odor. P. 

 brevicatile (Fig. 248). 



Cheese (Roquefort). 



i. Green streaks inside the cheese. P. Roqueforli (Fig. 244). 



Fig. 262. —Penicillium digitatum. a. Whole conidiophore and 'fructification; b, 

 c, d. e, types of branching and formation of conidiospores; m, «, o. germination of 

 conidiospores. {After Thorn.) 



Citrus fruits. 



1. Colonies of mould, blue-green. P. italicum (Fig. 247). 



2. Colonies of mould, olive-green. P. digitatum-oUvaceum . 

 Pomaceous fruits (apples, pears, etc.). 



1. Blue-green colonies finally producing coremia. P. expanstm (Fig. 243). 

 Polyporacei (Boleti, Polypori, etc.). 



I. Colonies green (yellowish-green), spreading by stolons. P. stoUmiferum 

 (Fig. 246). 



