 order_lyginopteridales |
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| 1. | [ noun ] (biology,botany) fossil gymnospermous trees or climbing plants from the Devonian: seed ferns | |
| Synonyms: | order_Cycadofilicales Lyginopteridales Cycadofilicales | |
| Related terms: | plant_order Pteridospermopsida Lyginopteris | |
| Similar spelling: |
order_Peronosporales |
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