File:EB1911 Flower - germinating pollen-grain of Epilobium.jpg

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EB1911_Flower_-_germinating_pollen-grain_of_Epilobium.jpg (410 × 256 pixels, file size: 44 KB, MIME type: image/jpeg)

Description
English: Germinating pollen-grain of Epilobium (highly mag.) bearing a pollen-tube s; e, exine; i, intine; abc, the three spots where the exine is thicker in anticipation of the formation of the pollen-tube developed in this case at a.
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 10, 1911, “Flower,” fig. 82, p. 568.
Author From Vines’ Students’ Text-Book of Botany.
Permission
(Reusing this file)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

File history

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Date/TimeThumbnailDimensionsUserComment
current15:52, 5 July 2017Thumbnail for version as of 15:52, 5 July 2017410 × 256 (44 KB)Bob Burkhardt{{Information |Description ={{en|1=Germinating pollen-grain of ''Epilobium'' (highly mag.) bearing a pollen-tube ''s''; ''e'', exine; ''i'', intine; ''abc'', the three spots where the exine is thicker in anticipation of the formation of the pollen-t...