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Lab 13

Lab 13. Coniferophyta, Gnetophyta. Coniferophyta. General features of the seed plants Common name : Conifers Synonyms : Pinophyta Sporophytes : Monoecious or dioecious; trees, shrubs Strobili : Simple or clustered pollen cone; compound seed cone with ovules on cone scales. Coniferophyta.

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Lab 13

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  1. Lab 13 Coniferophyta, Gnetophyta

  2. Coniferophyta • General features of the seed plants • Common name: Conifers • Synonyms: Pinophyta • Sporophytes: Monoecious or dioecious; trees, shrubs • Strobili: Simple or clustered pollen cone; compound seed cone with ovules on cone scales

  3. Coniferophyta • Undulipodia (“flagella”): None • Representative genera: Abies, Cedrus, Juniperus, Metasequoia, Picea, Pinus, Podocarpus, Sequoia, Sequoiadendron, Taxodium • Recognized by: Compound seed cones, needle or scale leaves

  4. P Juniper branches Coniferophyta

  5. D Pine branches Coniferophyta

  6. DPodocarpus Coniferophyta

  7. D Microsporangiate strobili Coniferophyta

  8. D Megasporangiate strobili Coniferophyta

  9. APinus fertilization Coniferophyta

  10. APinus wood Coniferophyta

  11. APinus leaf Coniferophyta

  12. APinus pollen cone Coniferophyta

  13. APinus pollen tubes Coniferophyta

  14. APinus young ovulate cone Coniferophyta

  15. APinus young ovulate cone Coniferophyta

  16. APinus mature embryo Coniferophyta

  17. P Pine seeds for dissection Coniferophyta

  18. P Conifer seedlings from Lab 2 Coniferophyta

  19. Gnetophyta • General features of the seed plants • Common name: Gnetophytes • Synonyms: None • Sporophytes: Dioecious; shrubs, vines • Strobili: Compound pollen cone; seed cone with 1-2 ovules

  20. Gnetophyta • Undulipodia (“flagella”): None • Representative genera: Ephedra, Gnetum, Welwitschia • Recognized by: Compound pollen cones, opposite leaves

  21. DEphedra Gnetophyta

  22. DEphedra pollen cone Gnetophyta

  23. DEphedra pollen cone Gnetophyta

  24. DEphedra seed cone Gnetophyta

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