\ AHl vrioNS, Ml'TATloNS, AM) ADAITATIoXS 



108 



(icd throuiiii the dcnioiist r;it ioii of uciictic (Mil i:il ion of iii;iiiy species hii-^cly on t lie l);(sis 



recoinhination ns will !>(> shown lalei'. of (he nature and intensity of the I'oi-nialion 



ol' ])i^nionts on different media. Major siib- 

 (li\-isions of the tieniis Slrcploinnccs, ospe- 

 \'ariations of tiie piiiuientation of actino- eially into sections oi'species-^roujjs, are also 



mycetes an* charactei-istic. 'riu>v are ol' based, most fre(|uently, upon pigmentation. 



particulai- siiiniticance because of the differ- The key used in iiei-jroy's system of classi- 



Culliinil (iitd riuisioloiiinil Wirialions 



Figure 50. Radiation-indviced in.stabilitie.s in streptom\-ce.s (Reproduced t'lom: Nowcombe, H. B. 

 J. Gen. MicrobioL 9: 35, 1953). 



