File:EB1911 Gymnosperms - Ginkgo - ovule and pollen grain.jpg
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EB1911_Gymnosperms_-_Ginkgo_-_ovule_and_pollen_grain.jpg (505 × 483 pixels, file size: 67 KB, MIME type: image/jpeg)
EB1911_Gymnosperms_-_Ginkgo_-_ovule_and_pollen_grain.jpg (505 × 483 pixels, file size: 67 KB, MIME type: image/jpeg)
DescriptionEB1911 Gymnosperms - Ginkgo - ovule and pollen grain.jpg |
English: Drawing of Ginkgo (apex of ovule, and pollen grain): p, pollen tube (proximal end); c, pollen chamber; e, upward prolongation of megaspore; a, archegonia; Pg, pollen grain; Ex, exine. |
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Date | published 1911 | ||||
Source | “Gymnosperms,” Encyclopædia Britannica (11th ed.), v. 12, 1911, fig. 13, p. 758 | ||||
Author | After Hirase. | ||||
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current | 15:42, 26 August 2017 | 505 × 483 (67 KB) | Bob Burkhardt (talk | contribs) | {{Information |Description ={{en|1=Drawing of ''Ginkgo'' (apex of ovule, and pollen grain): ''p'', pollen tube (proximal end); ''c'', pollen chamber; ''e'', upward prolongation of megaspore; ''a'', archegonia; ''Pg'', pollen grain; ''Ex'', exine.}}... |
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