714 



ADDITIONAL EXERCISES 



BB. Sclerotia not (or rarely) produced (under special conditions), 

 cultures (i) and (2), compare agar cultures. 



C. Rapid liquefiers (abundant liquid in five to twelve days). 



D. With definite, strong ammoniacal odor. 



1. Yellowish brown, spores rough. P. brevicaide (Fig. 248). 



2. White or cream, spores rough. P. brevicaide var. album. 



Use gelatin 



Fig. 255. — Penicillium funiculosutn. a, b, c, d, e, f, conidial fructifications with 

 conidiiferous cells and conidiospores; g, h, k, I, m, n, fructifications separate and 

 borne upon hyphae and ropes of hypha3; o, r, germination of conidiospores. (After 

 Thorn.) 



3. White or cream, spores smooth. P. brevicaide var. glabrum. 

 DD. Without ammoniacal odor. 

 E. With yellow coloration of liquefied gelatin (not of mycelium in reverse). 



1. Colonies small, conidiophores 100 to 150^ in length. P. citrinum. 



2. Colonies broadly spreading, conidiophores 250 to 300^. P- chrysogcnum 

 (Fig. 251). 



