Fraxinus ornus
Taxonomy: Angiospermae, Lamiales, Oleaceae, Fraxinus
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Fraxinus-ornus.htm
Published: 2020-12-07
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): 16-20 µm, shortest polar axis in equatorial view (LM): 16-20 µm, longest polar axis in equatorial view (LM): 16-20 µm, shortest diameter in equatorial or polar view (LM): 16-20 µm, longest diameter in equatorial or polar view (LM): 16-20 µm, pollen class: colporate, polarity: isopolar, P/E-ratio: isodiametric, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): oblique, 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: colporus, aperture condition: tricolporate, colporate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: reticulate, suprasculpture SEM: -, TEM tectum: semitectate, infratectum: columellate, foot layer: continuous, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: lipids, cell number: 2-celled, Ubisch bodies: absent
Annotations: ornamentation: reticulate to microreticulate
Author(s) of diagnosis: Halbritter, Heidemarie; Diethart, Bernadette; Heigl, Helmut
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. hydrated pollen
9. hydrated pollen
10. hydrated pollen
11. polar view
12. equatorial view
13. detail of polar area
14. aperture
15. detail of aperture
16. exine surface
17. dry pollen grains
18. polar view (dry pollen grain)
19. dry pollen grain in equatorial view
20. interapertural area of pollen wall
21. interapertural area of pollen wall
22. apertural area of pollen wall
23. pollen wall at transition of aperture and interapertural area
24. vegetative nucleus (left) and generative cell
Picture legend
- flower(s), photographer: Halbritter, H.
- 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.
- hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- detail of polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- 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.
- dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- vegetative nucleus (left) and generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
Literature
- (1994) Exkursionsflora von Österreich : 1180
- (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:
Halbritter H., Diethart B., Heigl H. 2020. Fraxinus ornus. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Fraxinus_ornus/304332; accessed 2025-04-27