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Lab 11

Lab 11. Sphenophyta, Pterophyta. Sphenophyta. General features of the vascular plants Common name : Horsetails Synonyms : Arthrophyta Sporophyte growth habit : Stems, leaves, roots Gametophyte growth habit : Photosynthetic thalli. Sphenophyta. Stele : Siphonostele

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Lab 11

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  1. Lab 11 Sphenophyta, Pterophyta

  2. Sphenophyta • General features of the vascular plants • Common name: Horsetails • Synonyms: Arthrophyta • Sporophyte growth habit: Stems, leaves, roots • Gametophyte growth habit: Photosynthetic thalli

  3. Sphenophyta • Stele: Siphonostele • Undulipodia (“flagella”): Several whiplash • Sexual reproduction: Homosporous • Representative genera: Equisetum • Recognized by: Scale leaves in whorls; hollow stems; meiosporangia on sporangiophores

  4. PEquisetum Sphenophyta

  5. AEquisetum aerial stem Sphenophyta

  6. DEquisetum rhizome Sphenophyta

  7. AEquisetum gametophyte Sphenophyta

  8. DEquisetum gametophyte with embryonic sporophyte Sphenophyta

  9. DEquisetum strobilus Sphenophyta

  10. DEquisetum strobilus Sphenophyta

  11. AEquisetum strobilus Sphenophyta

  12. AEquisetum meiospores Sphenophyta

  13. Pterophyta • General features of the vascular plants • Common name: Ferns • Synonyms: Pteridophyta, Filicophyta • Sporophyte growth habit: Stems, leaves, roots • Gametophyte growth habit: Photosynthetic thalli • Stele: Siphonostele or protostele

  14. Pterophyta • Undulipodia (“flagella”): Several whiplash • Sexual reproduction: Homosporous or heterosporous • Representative genera: Azolla, Cyrtomium, Marsilea, Osmunda, Polypodium, Salvinia • Recognized by: Meiosporangium with annulus (not in all); meiosporangia often in clusters (sori) on undersides of leaves

  15. P Assorted ferns Pterophyta

  16. P Sori Pterophyta

  17. P Sori Pterophyta

  18. P Sori Pterophyta

  19. P Sori Pterophyta

  20. P Sori Pterophyta

  21. P Sori Pterophyta

  22. AOsmunda rhizome Pterophyta

  23. AOsmunda rhizome Pterophyta

  24. AMarattia meiosporangia Pterophyta

  25. A Fern sporangia Pterophyta

  26. ACyrtomium sori Pterophyta

  27. P Fern gametophyte Pterophyta

  28. P Fern gametophyte Pterophyta

  29. A Fern gametophyte fertilization Pterophyta

  30. A Fern gametophyte with sporophyte Pterophyta

  31. D Fern gametophyte with sporophyte Pterophyta

  32. PMarsilea Pterophyta

  33. DMarsilea x.s. sporocarp Pterophyta

  34. D Germinating Marsilea sporocarps Pterophyta

  35. D Germinating Marsilea sporocarps Pterophyta

  36. DMarsilea male, female gametophytes Pterophyta

  37. PAzolla Pterophyta

  38. PSalvinia Pterophyta

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