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PalDat - Palynological Database

an online publication on recent pollen

Quercus robur

Taxonomy: Angiospermae, Fagales, Fagaceae, Quercus

Links: http://flora.nhm-wien.ac.at/seiten-arten/quercus-robur.htm

Published: 2020-08-04

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): 31-35 µm,  shortest polar axis in equatorial view (LM): 21-25 µm,  longest polar axis in equatorial view (LM): 26-30 µm,  shortest diameter in equatorial or polar view (LM): 26-30 µm,  longest diameter in equatorial or polar view (LM): 31-35 µm,  pollen class: colpate,  polarity: isopolar,  P/E-ratio: oblate,  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: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: colporoidate

Ornamentation and Structure

LMornamentation LM: scabrate, verrucate, gemmate,  nexine: -,  sexine: -,  SEMornamentation SEM: perforate,  suprasculpture SEM: -,  TEMtectum: 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; Heigl, Helmut

Pictures

flower(s)

1. flower(s)

pollen grain with generative cell

2. pollen grain with generative cell

upper focus

3. upper focus

optical section

4. optical section

lower focus

5. lower focus

equatorial view,polar view

6. equatorial view, polar view

hydrated Pollen

7. hydrated Pollen

hydrated Pollen

8. hydrated Pollen

hydrated Pollen

9. hydrated Pollen

polar view

10. polar view

equatorial view

11. equatorial view

detail of aperture

12. detail of aperture

exine surface

13. exine surface

dry pollen grains

14. dry pollen grains

polar view (dry pollen grain)

15. polar view (dry pollen grain)

equatorial view

16. equatorial view

anther wall with Ubisch bodies

17. anther wall with Ubisch bodies

anther wall with Ubisch bodies

18. anther wall with Ubisch bodies

pollen grain in cross section

19. pollen grain in cross section

interapertural area of pollen wall

20. interapertural area of pollen wall

apertural area of pollen wall

21. apertural area of pollen wall

pollen wall at apertural area with Ubisch bodies

22. pollen wall at apertural area with Ubisch bodies

Picture legend

  1. flower(s), photographer: Diethart, B.
  2. pollen grain with generative cell - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  3. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  4. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  5. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. equatorial view, polar view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
  7. hydrated Pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  8. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  9. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  10. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. equatorial view - 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. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  14. dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
  15. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  16. equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  17. anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  18. anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  19. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  20. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  21. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  22. pollen wall at apertural area with Ubisch bodies - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-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., Bouchal J., Heigl H. 2020. Quercus robur. In: PalDat - A palynological database. https://www.paldat.org/pub/Quercus_robur/303771;jsessionid=FE18A9E0E025A9AF82AA0C46E119114B; accessed 2020-09-26

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