DESCRIPTION OF PLATES. 

 PLATE I.- 



Phytophthora omnivora. 



FIG. i. A transverse section of a pod of cacao shewing conidiophores 

 emerging at the surface. 



FIG. 2. An oospore. 

 Peronospora trichotoma. 



FIG. 3. A branched conidiophore bearing conidia. 



FIG. 4. Two conidia more highly magnified. 



FIG. 5. An oospore. 



FIG. 6. The cut surface of a tuber shewing the black spots which 

 correspond with the positions of the vascular bundles. 

 Dimerosporium mangiferum. 



FIG. 7. A mature perithecium. 



FIG. 8. An ascus with spores. 

 Uncinula spiralis. 



FIG. 9. A hypha producing a chain of conidia. 



FIG. 10. Two conidia more highly magnified. 



FIG. II. A perithecium with appendages. 



PLATE II. 



Trichosphceria Sacchari. 



FIG. I. A cane shewing the curved tendrils of the Melanconium stage 

 oozing out from the surface. 



FIG. 2. The cut surface of a cane shewing the effect produced by the 

 macroconidial stage. 



FIG. 3. Hyphse producing macroconidia. 



FIG. 4. A perithecium. 



FIG. 5. An ascus. 

 Melanomma henriquesianum. 



FIG. 6. A piece of bark of cacao shewing perithecia emerging from the 

 surface. 



FIG. 7. A longitudinal section shewing an erumpent perithecium containing 

 asci 



FIG. 8 An ascus. 



FIG. 9. A single spore highly magnified. 



PLATE III. 



Eutypa caulivora. 



FIG. I. The stem of Heijea brasiliensis shewing the black, erumpent 

 patches produced by the fungus. 



FIG. 2. The cut surface of the wood of the same plant showing the 

 production of irregular, black streaks which is characteristic of species of the 

 genus Eutypa on wood. 

 Nectria Bainii, 



FIG. 4. A perithecium with byssoid stroma. 



FIG. 5. An ascus with spores. 

 Nectria Ipomoea. 



FIG. 6. A perithecium. 



FIG. 7. An ascus with spores. 

 Nectria Theobroma. 



FIG. 8. Two perithecia. 



FIG. 9. An ascus with spores. 



FIG. 10. Two spores. 

 Sphcerostilbe flavidiim 



FIG. II. A portion of a leaf of coffee shewing the fertile hyphae of the 

 Stilbum stage. 



FIG. 12. Two fertile hyphse bearing conidia of the Stilbum stage. 



FIG. 13. A perithecium. 



FIG. 14. An ascus with spores. 



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