Fraxinus excelsior
Taxonomy: Spermatophyta, Oleales, Oleaceae, Fraxinus
Published: 2005-06-01
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): medium-sized (26-50 µm), size of hydrated pollen (LM): -, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: -, polarity: isopolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): prolate, shape (dry pollen): -, outline in polar view (dry pollen): lobate, infoldings (dry pollen): aperture(s) sunken, aperture number: 3, aperture type: -, aperture condition: colpate, aperture peculiarities: aperture membrane ornamented
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: heterobrochate, reticulate, granulate, suprasculpture SEM: -, TEM tectum: semitectate, infratectum: columellate, foot layer: absent, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
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, B.
Pictures
1. flower(s)
2. flower(s)
3. flower(s)
4. pollen grain with generative cell
5. upper focus
6. optical section
7. lower focus
8. polar view (3-colpate pollen grain)
9. polar view (4-colpate pollen grain)
10. equatorial view (3-colpate pollen grain)
11. equatorial view (4-colpate pollen grain)
12. detail of aperture
13. detail of aperture
14. exine surface
15. dry pollen grains
16. polar view (dry pollen grain)
17. equatorial view (3-colpate pollen grain)
18. equatorial view (3-colpate pollen grain)
19. interapertural area of pollen wall
20. interapertural area of pollen wall
21. interapertural area of pollen wall
22. interapertural area of pollen wall
23. interapertural area of pollen wall
24. apertural area of pollen wall
25. pollen wall at transition of aperture and interapertural area
26. pollen wall at transition of aperture and interapertural area
27. generative cell (left) and vegetative nucleus
28. mitochondria and lipids in vegetative cytoplasm
Picture legend
- flower(s), photographer: Diethart, B.
- flower(s), photographer: Diethart, B.
- flower(s), photographer: Diethart, B.
- pollen grain with generative cell - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
- upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
- optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
- lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
- polar view (3-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- polar view (4-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- equatorial view (3-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- equatorial view (4-colpate pollen grain) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
- polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
- equatorial view (3-colpate pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
- equatorial view (3-colpate pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, Thiéry-test, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, Thiéry-test, photographer: Diethart, B.
- generative cell (left) and vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- mitochondria and lipids in vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
Literature
Copyright and Citation
Cite this publication as:
Diethart B. 2005. Fraxinus excelsior. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Fraxinus_excelsior/110183; accessed 2025-04-28