Section of Pine-seed

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Section of a Pine-seed, showing its polycotyledonous embryo in the centre of the albumen; moderately magnified.


Asa Gray The Elements of Botany for Beginners and for Schools (New York, Cincinnati, Chicago: American Book Co., 1887)


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553×1024, 95.1 KiB

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Small GIF

172×320, 19.4 KiB