DESCRIPTION OF PLATE III. 



Fruiting stages of E.roascus deformans. Figs. 1 to 13 (600/1), various stages and 

 conditions of the asci and ascospores of the fungus. Fig. 14, section of iieach leaf, 

 showing subepidermal and subcuticular mycelium, the latter already jiartially dif- 

 ferentiated into ascogenous cells. Fig. 15, section of peach leaf showing three suc- 

 cessive stages in the formation of the asci from the ascogenous cells: a, the pushing 

 of the ascogenous cells; h, the ascus nearly full-formed, but with the contents still 

 connected with the ascogenous cell; c, the asci separated by a septum from the ascog- 

 enous cell, which now forms the stalk cell of the ascus. Figs. 16 to 20 (600/1) , the 

 first stages in the formation of the asci from the ascogenous cells, the latter being 

 ruptured above and the asci pushing upward. Fig. 21, the pushing of a forming 

 a.«cus through the leaf cuticle (600/1) . Figs. 22 to 27 (600/1) , various stages in the 

 formation of ascogenous cells from subcuticular mycelium. (For several early stages 

 in this process see PI. II, figs. 6 to 9). Figs. 28 to 30 (600/1) show fully developed 

 ascogenous cells as seen from above. 



