7i6 



ADDITIONAL EXERCISES 



1. Fruiting areas dark green. P. funiculostim (Fig. 255). 



2. Fruiting areas mixed yellow and green. P. pinophilum. 

 hh. Colonies not producing red color. 



Fig. 257. — Penicillium biforme. a, b, g. Branching of conidial fructification; 

 c, d, e, f, conidiiferous cells and conidiospores; h, j, k, sketches of conidial fructifica- 

 tions on potato agar; I, m, sketches of conidial fructifications on sugar gelatin; o, r> 

 germination of conidiospores. {After Thorn.) 



1. Colonies gray, rarely greenish, very loose floccose. P. intricalum. 



2. Colonies gray to green, hyphie scattered, creeping. P. decumbens (Fig. 

 256). 



HH. Surface hyphae not in well-defined ropes, nor trailing. 



