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PalDat - Palynological Database

an online publication on recent pollen

Ulmus minor

Taxonomy: Spermatophyta, Urticales, Ulmaceae, Ulmus

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: -,  polarity: heteropolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: 5,  aperture type: -,  aperture condition: porate,  aperture peculiarities: operculum

Ornamentation and Structure

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

Miscellaneous

pollen coatings: absent,  reserves in cytoplasm: starch,  cell number: 3-celled,  Ubisch bodies: present

Annotations: Number of apertures is also 6. The dry pollen often is cupshaped. Ornamentation rugulate or verrucate. The endexine is not thickened in apertural regions.

Author(s) of diagnosis: Halbritter, H.; Diethart, B.

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

pollen grain with vegetative nucleus and two sperm cells

3. pollen grain with vegetative nucleus and two sperm cells

upper focus

4. upper focus

optical section

5. optical section

lower focus

6. lower focus

polar view

7. polar view

equatorial view

8. equatorial view

aperture

9. aperture

exine surface

10. exine surface

dry pollen grains

11. dry pollen grains

dry pollen grains

12. dry pollen grains

polar view (dry pollen grain)

13. polar view (dry pollen grain)

dry pollen grain in equatorial view

14. dry pollen grain in equatorial view

anther wall with Ubisch bodies

15. anther wall with Ubisch bodies

pollen grain in cross section

16. pollen grain in cross section

interapertural area of pollen wall

17. interapertural area of pollen wall

apertural area of pollen wall

18. apertural area of pollen wall

Ubisch bodies on inner anther wall

19. Ubisch bodies on inner anther wall

mitochondria and dictyosom in vegetative cytoplasm

20. mitochondria and dictyosom in vegetative cytoplasm

Picture legend

  1. flower(s), photographer: Diethart, B.
  2. flower(s), photographer: Halbritter, H.
  3. pollen grain with vegetative nucleus and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  4. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  5. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  7. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  8. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  9. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  10. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
  12. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  13. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  14. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  15. anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  16. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  17. interapertural area of pollen wall - 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. Ubisch bodies on inner anther wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  20. mitochondria and dictyosom in vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.

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Copyright and Citation

Cite this publication as:

Halbritter H., Diethart B. 2005. Ulmus minor. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Ulmus_minor/113700;jsessionid=7AA20B494EA23FF0D4A5A1769D28EC2A; accessed 2025-01-26

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