File:EB1911 Flower - orthotropous ovule of Polygonum.jpg

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EB1911_Flower_-_orthotropous_ovule_of_Polygonum.jpg (180 × 252 pixels, file size: 15 KB, MIME type: image/jpeg)

Description
English: Drawing of orthotropous ovule of Polygonum in section, showing the embryo-sac s, in the nucellus n, the different ovular coverings, the base of the nucellus or chalaza ch, and the apex of the ovule with its micropyle m.
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 10, 1911, “Flower,” fig. 108, p. 572.
Author Unknown authorUnknown author
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(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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current15:13, 17 July 2017Thumbnail for version as of 15:13, 17 July 2017180 × 252 (15 KB)Bob Burkhardt{{Information |Description ={{en|1=Drawing of orthotropous ovule of Polygonum in section, showing the embryo-sac s, in the nucellus n, the different ovular coverings, the base of the nucellus or chalaza ch, and the apex of the ovule with its micropy...