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The fertilizing cell, its varying form and behavior by Nelly Peery, 1890

The fertilizing cell, its varying form and behavior by Nelly Peery, 1890, Page 101

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Plate VII Fig 1. - Mature pollen grain of Podophyllum peltatum. Fig 2. - The same, after germination, showing peculiar convoluted tube, and two nuclei. (Bent to fit the plate).
 
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