. Elementary biology; an introduction to the science of life . In the orchids the stamens are fused with the stigma, placing the anthers above the stigma in such a way as to make self-pollenation absolutely im- possible, an, anther; /, pollen masses : s, stigma. A, general view of flower; B, position of hands and needle in artificial pollenation ; C, needle lift- ing pollen masses; D, anther raised to expose pollen masses ; E, style raised to show opening in stigma; F. longitudinal section to show relative positions of anther and stigma: G. longitudinal section after pollenation, showing polle
. Elementary biology; an introduction to the science of life . In the orchids the stamens are fused with the stigma, placing the anthers above the stigma in such a way as to make self-pollenation absolutely im- possible, an, anther; /, pollen masses : s, stigma. A, general view of flower; B, position of hands and needle in artificial pollenation ; C, needle lift- ing pollen masses; D, anther raised to expose pollen masses ; E, style raised to show opening in stigma; F. longitudinal section to show relative positions of anther and stigma: G. longitudinal section after pollenation, showing pollen masses in the stigma. .\11 the vanilla beans in the Seychelles Islands are grown with hand pollenation
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
