APPENDIX Vn 



715 



EE. Without yellow color in liquefied gelatin (or slight traces only). 

 e. Colonies white to pink or salmon. P. roseum (Fig. 252). 

 ee. Colonies some shade of green. 



/. Colonies floccose, margin spreading by stolons. P. stoloniferum (Fig. 246). 



//. Colonies velvety; surface growth of fruiting hyphje only; conidiophores 



200 to 400/4 long, with a verticil of branches; reverse and medium 



darkened in sugar media. P. atrameniosum (Fig. 253). 



CC. Liquefaction of gelatin none or slower than ten to twelve days, or only partial. 



G. Colonies never green. 



Fig. 256. — Penicillium decumbens. a, b, c, d, Conidial fructification with a 

 single verticil of conidiiferous cells; h, j, k, sketches of conidial fructifications. {After 

 Thorn.) 



g. Colonies yellowish-brown, spores elliptic. P. divaricatum. 



gg. Colonies white to lilac, slow liquefier, fourteen to sixteen days. P. lilacinum 

 (Fig. 254)- 



ggg. Colonies floccose white or creamy; conidiophores long, typically penicillate. 

 P. Camemberti var. Rogeri. 

 GG. Colonies some shade of green. 



H. Surface with hjrphae definitely in ropes or trailing, bearing numerous conidio- 

 phores, as short branches, distinctly traceable to their origin in such 

 hyphae. 



h. Colonies usually red below and reddening the substratum. 



