PLATE LI I 



Fig. I. — Clematis paniculaia: A portion of a vine 44 inches long that showed indica- 

 tions of wilting of the lower leaves while the distal leaves were still turgid . The fungus 

 entered through the stub a. In the girdled region the parenchyma of the roots had 

 disintegrated, leaving the central cylinder as the only means of communication with 

 the healthy roots below. Ascochyta cletnatidina was isolated in pure cultures from the 

 boimdaries of the lesion. 



Fig. 2. — Ascochyta ckmatidina: Chlamydospores as formed on starch agar. 



Fig. 3. — Ascochyta ckmatidina: Camera-lucida drawing of spores. 



