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PalDat - Palynological Database

an online publication on recent pollen

Fraxinus ornus

Taxonomy: Angiospermae, Lamiales, Oleaceae, Fraxinus

Published: 2016-07-13

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: colporate,  polarity: isopolar,  shape: spheroidal,  outline in polar view: circular,  shape (dry pollen): prolate,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: reticulate,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

Miscellaneous

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

Annotations

ornamentation: reticulate to microreticulate

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

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

flower(s)

3. flower(s)

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

polar view

8. polar view

equatorial view

9. equatorial view

detail of polar area

10. detail of polar area

aperture

11. aperture

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)

dry pollen grain in equatorial view

16. dry pollen grain in equatorial view

interapertural area of pollen wall

17. interapertural area of pollen wall

interapertural area of pollen wall

18. interapertural area of pollen wall

apertural area of pollen wall

19. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

20. pollen wall at transition of aperture and interapertural area

vegetative nucleus (left) and generative cell

21. vegetative nucleus (left) and generative cell

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. flower(s), photographer: Diethart, B.
  3. flower(s), 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. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  9. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  10. detail of polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. aperture - 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. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  17. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  18. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
  19. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Diethart, B.
  20. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  21. vegetative nucleus (left) and generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-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:

Halbritter H., Diethart B. 2016. Fraxinus ornus. In: PalDat - A palynological database. https://www.paldat.org/pub/Fraxinus_ornus/301216;jsessionid=733519ACE935DFD75FEAFC444C69D902; accessed 2018-11-17

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