File:EB1911 Pollination - Vallisneria spiralis.jpg

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EB1911_Pollination_-_Vallisneria_spiralis.jpg(594 × 480 pixels, file size: 81 KB, MIME type: image/jpeg)

Description
English: Vallisneria spiralis: A, female flower; s, stigmas; B, male flowers; 1 before; 2, after spreading of the petals. A male flower has floated alongside a female and one of its anthers, which have opened to set free the pollen, is in contact with a stigma. a, anther.
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 22, 1911, “Pollination,” fig. 4, p. 3.
Author Unknown authorUnknown author
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.

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current16:33, 20 July 2017Thumbnail for version as of 16:33, 20 July 2017594 × 480 (81 KB)Bob Burkhardt{{Information |Description ={{en|1=''Vallisneria spiralis'': A, female flower; ''s'', stigmas; B, male flowers; 1 before; 2, after spreading of the petals. A male flower has floated alongside a female and one of its anthers, which have opened to set...