101 



POLLEN, OR FLOWER-DUST 



although some families develop two or three 

 well-marked types. Fig. 66 shows a pretty pollen- 



Fig. 64. Pollen-dust from the evening primrose shown 

 in various positions 



grain from the flower of Cobcea scandens, a culti- 

 vated climbing plant, called in its native country 

 the "violet ivy," and allied to the phloxes of our 



