714 



ADDITIONAI. EXERCISES 



BB. Sderotia not (or rarely) produced (under special conditions). Use gelatin 

 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. brevicauk (Fig. 248). 



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



Fig. 255. — Penicillium funiculosum. a, b^ c, d, c, f, conidial fructifications with 

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

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

 Thorn.) 



DD, 



3. White or cream, spores smooth. 

 Without ammoniacal odor. 



P. brevicaule var. glabrum. 



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



1. Colonies small, conidiophores 100 to ijo/i in length. P. ciirinum. 



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

 (Fig. 251). 



