EXPLANATION OF PLATE V 



FUNGI IMPERFECTI 



FIG. i. Septoria pirina (SPHAEROPSTDALES). Pear leaf showing leaf- 

 spots. The pycnidia appear as minute dots one or more on each spot. 

 Natural size ; drawn from life. FIG. 2. Section through a pycnidium 

 on the pear leaf showing the attachment of the spores. Greatly mag- 

 nified. (Redrawn from Duggar. ) 



FIG. 3. Pycnidium of Ampelomyces quisqualis (SPHAEROPSIDALES), 

 inside the conidiophore of Erysibe. X 200. Drawn from nature by D. 

 Griffiths. 



FIG. 4. Entomosporium (SPHAEROPSIDALES); spores from the leaf- 

 blight of the pear. Greatly magnified. (Redrawn from Duggar. ) 



FIG. 5. Dinemosporium (SPHAEROPSIDALES). Septate appendaged 

 spore. Greatly magnified. 



FIG. 6. Colletotrichum (MELANCONlALEs) ; bean pod affected with 

 anthracnose caused by the fungus, y^ natural size. (Redrawn from 

 Cowing); Fig. 7, spores of same, greatly magnified. (Redrawn from 

 Southworth. ) 



FIG. 8. Pestalozzia (MELANCONIALES). Spores showing appendages 

 and hyaline end-cells. X 400. ( Redrawn from Desmazieres. ) 



FIG. 9. Monilia fructigena (MONILIALES), hypha forming catenulate 

 spores. Greatly magnified. 



FIG. 10. Botrytis vulgaris ( MONILIALES). End of spore-bearing 

 hypha with clusters of spores. 



FIG. ii. Raimdaria (MONILIALES). Didymoid spore greatly magni- 

 fied. 



FIG. 12. Acervulus of Cercospora gossypina ( MONILIALES) issuing 

 from the epidermis of cotton leaf; Fig. 13, spores of same. Both greatly 

 magnified. (Redrawn from Southworth. ) 



FIG. 14. Ceratophorum (MONILIALES). Spore bearing appendages 

 at either end. Greatly magnified. 



(232) 



