File:Flickr - brewbooks - Cycads and zamias.jpg
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English: Cycads and zamias Cycads and zamias are a group of 'living fossil' plants which have leaves resembling those of palms but they are not related to them. They are descendants of plants that flourished 260 million years ago. A total of about 120 species now survive throughout the tropical and sub-tropical regions of the world. The plants are either female or male and bear large cones. The seeds, when leached of their toxicity, are a source of flour for native people. Cone-bearing plants In this group, plants such as pine produce their seeds in cones. The seeds develop on the surface of the scales that make up the cone and are said to be 'naked'. The name gymnosperms, meaning naked seed, is given to this group. Gymnosperms include the following divisions: Ginkgophyta – 1 species: 1 genus Pinophyta – c. 610 species: 57 genera Cycadophyta – c. 123 species: 10 genera. The plants have male and female cones. The cones differ in shape and may be on the same plant or on plants of separate sex. Pollination by wind. Seeds displayed of species: Cycas thouarsii Malagasy Cycas siamensis Burma, Thailand Cycas rumphii Malaysia, Northern Australia Cycas media Queensland, Northern Territory Cycas circinalis Tropical Africa to Guam |
| Date | |
| Source | Cycads and zamias |
| Author | brewbooks from near Seattle, USA |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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This image, originally posted to Flickr, was reviewed on 17 June 2012 by the administrator or reviewer Matanya, who confirmed that it was available on Flickr under the stated license on that date. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:10, 17 June 2012 | | 2,592 × 1,944 (969 KB) | Matanya (talk | contribs) | == {{int:filedesc}} == {{Information |Description=[http://en.wikipedia.org/wiki/Cycad Cycads] and zamias Cycads and zamias are a group of 'living fossil' plants which have leaves resembling those of palms but which are not related to them. They are des... |
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