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PalDat - Palynological Database

an online publication on recent pollen

Quercus cerris

Taxonomy: Angiospermae, Fagales, Fagaceae, Quercus

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

Published: 2020-08-03

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): 36-40 µm,  shortest polar axis in equatorial view (LM): 26-30 µm,  longest polar axis in equatorial view (LM): 31-35 µm,  shortest diameter in equatorial or polar view (LM): 31-35 µm,  longest diameter in equatorial or polar view (LM): 31-35 µm,  pollen class: colpate,  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: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: scabrate, verrucate, gemmate,  nexine: -,  sexine: -,  SEMornamentation SEM: granulate, perforate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: endexine very thin

Author(s) of diagnosis: Diethart, Bernadette; 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

hydrated Pollen

6. hydrated Pollen

hydrated Pollen

7. hydrated Pollen

hydrated Pollen

8. hydrated Pollen

polar view

9. polar view

equatorial view

10. equatorial view

slightly oblique equatorial view

11. slightly oblique equatorial view

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)

dry pollen grain in equatorial view

17. dry pollen grain in equatorial view

Ubisch bodies on inner anther wall

18. Ubisch bodies on inner anther wall

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

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. hydrated Pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  7. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  8. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  9. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  10. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. slightly oblique 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. 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. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  18. Ubisch bodies on inner anther wall - 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, modified Thiéry-test, photographer: Diethart, B.
  21. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, 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., Heigl H. 2020. Quercus cerris. In: PalDat - A palynological database. https://www.paldat.org/pub/Quercus_cerris/303770;jsessionid=AF34C9E70DF73C27F8232B6A7296AF2B; accessed 2020-10-28

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