ADAPTATIONS FOR POJ.LINATION 



169 



Means of Protp:ction of Certain Plants 



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



Outline for Study of Adaptations for Pollination^ 



r 1, greenish, nectarless, inconspicuous perianth ? 

 I. Is the flower I 2, appearing before the leaves ? 



characterized by i 3, dry, dusty pollen ? 

 I 4, feathery stigmas ? 



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



r 5 curving stamens which bring the anthers into oon- 

 II. Is the flower I ' ^^^^ ^^.^^^ ^j^^ ^^.^^^^ , If ^^^ ;^ j, self-pollinated 



characterized by | ^^^^ Principles, Fig. 330).^ 



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

 material is not usually available for study. 



2 Many self-polliuated tiowers are not easily distuiuuislied as such. 



