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PalDat - Palynological Database

an online publication on recent pollen

Corylus avellana

Taxonomy: Spermatophyta, Fagales, Betulaceae, Corylus

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: porate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): oblate,  shape (dry pollen): -,  outline in polar view (dry pollen): triangular,  infoldings (dry pollen): interapertural area sunken,  aperture number: 3,  aperture type: porus,  aperture condition: porate, triporate,  aperture peculiarities: operculum, oncus, annulus

Ornamentation and Structure

LM  ornamentation LM: psilate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: rugulate, granulate,  suprasculpture SEM: -,  TEM  tectum: eutectate,  infratectum: granular,  foot layer: continuous,  endexine: absent,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Author(s) of diagnosis: Halbritter, Heidemarie; Diethart, Bernadette

Pictures

male flowers of Corylus avellana

1. male flowers of Corylus avellana

male flowers of Corylus avellana

2. male flowers of Corylus avellana

male flowers of Corylus avellana

3. male flowers of Corylus avellana

pollen grain with generative cell

4. pollen grain with generative cell

upper focus

5. upper focus

optical section

6. optical section

lower focus

7. lower focus

pollen grains with Ubisch bodies

8. pollen grains with Ubisch bodies

polar view

9. polar view

equatorial view

10. equatorial view

aperture

11. aperture

exine surface

12. exine surface

dry pollen grains

13. dry pollen grains

polar view (dry pollen grain)

14. polar view (dry pollen grain)

dry pollen grain in equatorial view

15. dry pollen grain in equatorial view

Ubisch bodies

16. Ubisch bodies

pollen grain in cross section

17. pollen grain in cross section

apertural area of pollen wall

18. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

19. pollen wall at transition of aperture and interapertural area

interapertural area of pollen wall

20. interapertural area of pollen wall

anther wall with Ubisch bodies in loculus

21. anther wall with Ubisch bodies in loculus

Picture legend

  1. male flowers of Corylus avellana, photographer: Halbritter, H.
  2. male flowers of Corylus avellana, photographer: Diethart, B.
  3. male flowers of Corylus avellana, photographer: Diethart, B.
  4. pollen grain with generative cell - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  5. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  7. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  8. pollen grains with Ubisch bodies - fresh, DMP & critical point dried, photographer: Halbritter, H.
  9. polar view - fresh, DMP & critical point dried, photographer: Halbritter, H.
  10. equatorial view - fresh, DMP & critical point dried, photographer: Halbritter, H.
  11. aperture - fresh, DMP & critical point dried, photographer: Halbritter, H.
  12. exine surface - fresh, DMP & critical point dried, photographer: Halbritter, H.
  13. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  14. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  15. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  16. Ubisch bodies - fresh, DMP & critical point dried, photographer: Halbritter, H.
  17. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  18. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  19. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  20. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, lipid-test, photographer: Diethart, B.
  21. anther wall with Ubisch bodies in loculus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, Thiéry-test, photographer: Diethart, B.

Literature

  • Blackmore S, Steinmann JAJ, Hoen PP, Punt W (2003) Betulaceae and Corylaceae. In: The Northwest European Pollen Flora 65. Rev Palaeobot Palynol 123: 71-98
  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180

Copyright and Citation

Cite this publication as:

Halbritter H., Diethart B. 2005. Corylus avellana. In: PalDat - A palynological database. https://www.paldat.org/pub/Corylus_avellana/108748;jsessionid=BCA00A0B90F7216EE995576476292663; accessed 2024-04-24

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