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Quillwort (Isoetes)

Quillwort (Isoetes). HABITAT. SPOROPHYTE: Two-Lobed Corm (Stem, Rhizomorph). Stem. Rhizomorph. Primary Growth (Apical Cell/Apical Meristem). (Leaves, Xylem Core). CORM: Primary Growth (Apical Cell/Apical Meristem). CORM: Primary Growth (Leaves). CORM: Primary Growth (Leaves).

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Quillwort (Isoetes)

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  1. Quillwort (Isoetes)

  2. HABITAT

  3. SPOROPHYTE: Two-Lobed Corm (Stem, Rhizomorph) Stem Rhizomorph

  4. Primary Growth(Apical Cell/Apical Meristem) (Leaves, Xylem Core)

  5. CORM: Primary Growth (Apical Cell/Apical Meristem)

  6. CORM: Primary Growth (Leaves)

  7. CORM: Primary Growth (Leaves)

  8. CORM: Primary Growth (Xylem Core) Perpendicular to Groove Through Groove

  9. CORM: Secondary Growth (Lateral Meristem) (Prismatic Layer, Secondary Cortex)

  10. CORM: Secondary Growth (Lateral Meristem) (Prismatic Layer, Secondary Cortex)

  11. CORM: Secondary Growth (Prismatic Layer)

  12. CORM: Secondary Growth (Basal Meristem) (Xylem Core, Roots)

  13. Secondary Growth: Secondary Growth(Basal Meristem) (Xylem Core, Roots)

  14. Secondary Growth: Basal Meristem (Root)

  15. Stigmaria Roots(Carboniferous ~ 360-300 MYA)

  16. SPOROPHYTE: • Megasporophylls • Megasporangia • Megaspores • Microsporophylls • Microsporangia • Microspores

  17. SPOROPHYTE: Megasporogenesis Megasporophyll, Megasporangium, Megaspores (Ligule, Velum, Trabeculae, Tapetum)

  18. SPOROPHYTE: Microsporogenesis Microsporophyll, Microsporangium, Microspores (Ligule, Velum, Trabeculae, Tapetum)

  19. GAMETOPHYTE: Microgametogenesis Microspore, Male Gametophyte, Sperm

  20. GAMETOPHYTE: Megagametogenesis Megaspore, Female Gametophyte, Egg

  21. FERTILIZATION AND DEVELOPMENT (Zygote, Embryo) (Endoscopic Development without Suspensor)

  22. ______________________ ____________________

  23. IS IT A SEED?

  24. IS IT WOOD?

  25. Pleuromeia (Triassic) Nathorstiana (Cretaceous)

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