ADAPTATIONS FOB POLLINATION 



169 



Means of Pbotection of Certain Plants 



References. Kerner-Oliver, 2 ; Ludwig, 51. 



Outline foe Study of Adaptations fob Pollination^ 



I. Is the flower 



C 1, greenish, neotarless, mconspicuous perianth ? 



I 2, appearing before the leaves ? 



characterized by 1 3, dry, dusty pollen ? 



1^,4, feathery stigmas ? 



If several of these characteristics are found, it is probably wwd-pollinated. 



II. Is the flower 

 characterized by 



5, curving stamens which bring the anthers into con- 

 tact with the stigma ? If so, it is self-pollinated, 

 (see Principles, Fig. 330). ^ 



1 Pollination by water is not discussed here, as the cases are rather few and 

 material Is not usually available for study. 



2 Many self-pollinated flowers are not easily distinguished as such. 



