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

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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)

This image comes from the 13^th 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.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:52, 5 July 2017		410 × 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...

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