54 Bulletin 313 



— On leaves of Dracaena sanderiaua 

 and D. terminalis. Causes a spotting and dying of the leaves (prob- 

 ably = Colletotrichum dracaenae Allesch). Acervuli on both sides 

 of the leaves and also on canes, scattered or grouped, flesh-colored 

 becoming black; bristles dark brown, 40-100 x 2.5-5 p.; conidiospores 

 crowded, short hyaline ; usually straight ; ends usually rounded, hya- 

 line, 13-30 X 3.5 /z; ascospores 13.3-20 x 3.3-6.6 ft. 



254. Infected leaf of Dracaena sanderiana. 255. Infected cane showing 

 acervuli. 256. Acervuli on leaf, 2/3. 257. Bristle from cane, 1/12. 258. 

 Conidia, 1/12. 259. Perithecium, 2/3. 260. Tip of perithecium, 2/3. 261. 

 Rupturing of perithecium, 1/12. 262. Ascus, 1/12. 263. Ascospores, 1/12. 

 264. .Germinating spores, 1/12. 265. Bristle from D. terminaUs, 1/12. 266. 

 Conidia from same, 1/12. 



