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PalDat - Palynological Database

an online publication on recent pollen

Fraxinus excelsior

Taxonomy: Angiospermae, Lamiales, Oleaceae, Fraxinus

Published: 2016-07-13

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: colpate,  polarity: isopolar,  shape: spheroidal,  outline in polar view: circular,  shape (dry pollen): prolate,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: reticulate,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate, heterobrochate, granulate,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: absent,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch,  cell number: 2-celled,  Ubisch bodies: absent

Annotations

also 4 colpate pollen grains; granulae as sculpture elements; outline dry: lobate or triangular

Author(s) of diagnosis: Diethart, Bernadette

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

flower(s)

3. flower(s)

pollen grain with generative cell

4. pollen grain with generative cell

upper focus

5. upper focus

optical section

6. optical section

lower focus

7. lower focus

polar view (3-colpate pollen grain)

8. polar view (3-colpate pollen grain)

polar view (4-colpate pollen grain)

9. polar view (4-colpate pollen grain)

equatorial view (3-colpate pollen grain)

10. equatorial view (3-colpate pollen grain)

equatorial view (4-colpate pollen grain)

11. equatorial view (4-colpate pollen grain)

detail of aperture

12. detail of aperture

detail of aperture

13. detail of aperture

exine surface

14. exine surface

dry pollen grains

15. dry pollen grains

polar view (dry pollen grain)

16. polar view (dry pollen grain)

equatorial view (3-colpate pollen grain)

17. equatorial view (3-colpate pollen grain)

equatorial view (3-colpate pollen grain)

18. equatorial view (3-colpate pollen grain)

interapertural area of pollen wall

19. interapertural area of pollen wall

interapertural area of pollen wall

20. interapertural area of pollen wall

interapertural area of pollen wall

21. interapertural area of pollen wall

interapertural area of pollen wall

22. interapertural area of pollen wall

interapertural area of pollen wall

23. interapertural area of pollen wall

apertural area of pollen wall

24. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

25. pollen wall at transition of aperture and interapertural area

pollen wall at transition of aperture and interapertural area

26. pollen wall at transition of aperture and interapertural area

generative cell (left) and vegetative nucleus

27. generative cell (left) and vegetative nucleus

mitochondria and lipids in vegetative cytoplasm

28. mitochondria and lipids in vegetative cytoplasm

Picture legend

  1. flower(s), photographer: Diethart, B.
  2. flower(s), photographer: Diethart, B.
  3. flower(s), photographer: Diethart, B.
  4. pollen grain with generative cell - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  5. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  7. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  8. polar view (3-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  9. polar view (4-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  10. equatorial view (3-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. equatorial view (4-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  12. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  13. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  14. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  15. dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
  16. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  17. equatorial view (3-colpate pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  18. equatorial view (3-colpate pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  19. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  20. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  21. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
  22. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, Thiéry-test, photographer: Diethart, B.
  23. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  24. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  25. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  26. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, Thiéry-test, photographer: Diethart, B.
  27. generative cell (left) and vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  28. mitochondria and lipids in vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.

Literature

  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143

Copyright and Citation

Cite this publication as:

Diethart B. 2016. Fraxinus excelsior. In: PalDat - A palynological database. https://www.paldat.org/pub/Fraxinus_excelsior/301215;jsessionid=8FEAA448EA9DA43EEFA774485D29C8EE; accessed 2018-11-21

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