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PalDat - Palynological Database

an online publication on recent pollen

Ambrosia artemisiifolia

Taxonomy: Angiospermae, Asterales, Asteraceae, Ambrosia

Links: http://flora.nhm-wien.ac.at/seiten-arten/ambrosia-artemisifolia.htm

Published: 2020-12-17

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): small (10-25 µm),  size of hydrated pollen (LM): 16-20 µm,  shortest polar axis in equatorial view (LM): 16-20 µm,  longest polar axis in equatorial view (LM): 16-20 µm,  shortest diameter in equatorial or polar view (LM): 16-20 µm,  longest diameter in equatorial or polar view (LM): 16-20 µm,  pollen class: colporate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): -,  shape (dry pollen): spheroidal,  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: brevicolporus

Ornamentation and Structure

LMornamentation LM: echinate,  nexine: present,  sexine: present,  SEMornamentation SEM: echinate, perforate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: absent,  endexine: lamellar-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: the aperture seems to be porate as the the colpus is very short and almost not visible

Author(s) of diagnosis: Sam, Saskia; Halbritter, Heidemarie; Heigl, Helmut

Pictures

habitus

1. habitus

inflorescence(s)

2. inflorescence(s)

3-celled pollen

3. 3-celled pollen

acetolyzed pollen, upper focus

4. acetolyzed pollen, upper focus

acetolyzed pollen, optical section

5. acetolyzed pollen, optical section

acetolyzed pollen, lower focus

6. acetolyzed pollen, lower focus

hydrated pollen

7. hydrated pollen

hydrated pollen

8. hydrated pollen

hydrated pollen

9. hydrated pollen

hydrated pollen, polar view

10. hydrated pollen, polar view

polar view

11. polar view

hydrated pollen, equatorial view

12. hydrated pollen, equatorial view

hydrated pollen, equatorial view

13. hydrated pollen, equatorial view

hydrated pollen, equatorial view

14. hydrated pollen, equatorial view

aperture

15. aperture

exine surface

16. exine surface

dry pollen grains

17. dry pollen grains

dry pollen

18. dry pollen

dry pollen

19. dry pollen

aperture

20. aperture

exine surface

21. exine surface

Ubisch bodies absent

22. Ubisch bodies absent

cross section of pollen grain

23. cross section of pollen grain

pollen wall, aperture area

24. pollen wall, aperture area

pollen wall, aperture area

25. pollen wall, aperture area

pollen wall, interapertural area

26. pollen wall, interapertural area

Picture legend

  1. habitus, photographer: Sam, S.
  2. inflorescence(s), photographer: Sam, S.
  3. 3-celled pollen - dry, unfixed & rehydrated (water), aceto-carmine, photographer: Sam, S.
  4. acetolyzed pollen, upper focus - dry, acetolyzed, unstained, photographer: Sam, S.
  5. acetolyzed pollen, optical section - dry, acetolyzed, unstained, photographer: Sam, S.
  6. acetolyzed pollen, lower focus - dry, acetolyzed, unstained, photographer: Sam, S.
  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. hydrated pollen, polar view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  11. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  12. hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  13. hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  14. hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  15. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  16. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  17. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  18. dry pollen - dry, sputter coated with gold, photographer: Sam, S.
  19. dry pollen - dry, sputter coated with gold, photographer: Sam, S.
  20. aperture - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  21. exine surface - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  22. Ubisch bodies absent - dry, sputter coated with gold, photographer: Sam, S.
  23. cross section of pollen grain - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  24. pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  25. pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  26. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.

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:

Sam S., Halbritter H., Heigl H. 2020. Ambrosia artemisiifolia. In: PalDat - A palynological database. https://www.paldat.org/pub/Ambrosia_artemisiifolia/304617;jsessionid=16C344677756E723302A3D538AAA220C; accessed 2021-10-17

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