Quercus robur
Taxonomy: Angiospermae, Fagales, Fagaceae, Quercus
Published: 2018-10-08
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: colporate, colpate, 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: colpus, aperture condition: tricolpate, colpate, aperture peculiarities: colporoidate
Ornamentation and Structure
LM ornamentation LM: scabrate, nexine: -, sexine: -, SEM ornamentation SEM: perforate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: discontinuous, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: lipids, cell number: 2-celled, Ubisch bodies: present
Annotations: endexine very thin
Author(s) of diagnosis: Diethart, Bernadette; Bouchal, Johannes Martin
Pictures
1. flower(s)
2. pollen grain with generative cell
3. upper focus
4. optical section
5. lower focus
6. equatorial view, polar view
7. polar view
8. equatorial view
9. detail of aperture
10. exine surface
11. dry pollen grains
12. polar view (dry pollen grain)
13. equatorial view
14. anther wall with Ubisch bodies
15. anther wall with Ubisch bodies
16. pollen grain in cross section
17. interapertural area of pollen wall
18. apertural area of pollen wall
19. pollen wall at apertural area with Ubisch bodies
Picture legend
- 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.
- equatorial view, polar view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
- 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 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 - dry, sputter coated with gold, photographer: Diethart, B.
- anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
- pollen wall at apertural area with Ubisch bodies - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-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:
Diethart B., Bouchal J. 2018. Quercus robur. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Quercus_robur/303318; accessed 2025-04-28