

Fic. 12.—SECTION OF AN APPLE BLOSSOM SHOWING THE PARTS FIG. 14.—POLLEN GRAINS OF 
OF THE FLOWER. C, CALYX; PT, PETALS; ST, STAMENS: 
; AMARYLLIS JOHNSONI BE- 
S, STIGMATIC SURFACE; 0, OVARY; OV, OVULEs. FORE GERMINATING. 

FIG. 13.—SECTION OF AN APPLE BLOSSOM WITH PETALS AND 
STAMENS REMOVED, LEAVING THE CALYX AND PISTIL. 
S, STIGMATIC SURFACE; O, OVARY; OV, OVULEs. 


Fic. 15.—PoOLLEN GRAINS OF Fic. 16.—SPORES OF THE 
AMARYLLIS JOHNSONI AF- CARNATION RusT Fun- 
TER GERMINATION, SHOW- GUS UROMYCES CaRyY- 
ING THE BEGINNING OF OPHYLLINUS BEFORE 
THE POLLEN TUBES. GERMINATING. 

Fig. 17.—SPORES OF THE CAR- 
NATION RUST FUNGUS AF- 
TER GERMINATION SHOWING 
THE BEGINNING OF THE 
GERM TUBES. 
