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
LM ornamentation LM: echinate, nexine: present, sexine: present, SEM ornamentation SEM: echinate, perforate, suprasculpture SEM: -, TEM tectum: 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
1. habitus
2. inflorescence(s)
3. 3-celled pollen
4. acetolyzed pollen, upper focus
5. acetolyzed pollen, optical section
6. acetolyzed pollen, lower focus
7. hydrated pollen
8. hydrated pollen
9. hydrated pollen
10. hydrated pollen, polar view
11. polar view
12. hydrated pollen, equatorial view
13. hydrated pollen, equatorial view
14. hydrated pollen, equatorial view
15. aperture
16. exine surface
17. dry pollen grains
18. dry pollen
19. dry pollen
20. aperture
21. exine surface
22. Ubisch bodies absent
23. cross section of pollen grain
24. pollen wall, aperture area
25. pollen wall, aperture area
26. pollen wall, interapertural area
Picture legend
- habitus, photographer: Sam, S.
- inflorescence(s), photographer: Sam, S.
- 3-celled pollen - dry, unfixed & rehydrated (water), aceto-carmine, photographer: Sam, S.
- acetolyzed pollen, upper focus - dry, acetolyzed, unstained, photographer: Sam, S.
- acetolyzed pollen, optical section - dry, acetolyzed, unstained, photographer: Sam, S.
- acetolyzed pollen, lower focus - dry, acetolyzed, unstained, photographer: Sam, S.
- hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen, polar view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- hydrated pollen, equatorial view - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
- dry pollen - dry, sputter coated with gold, photographer: Sam, S.
- dry pollen - dry, sputter coated with gold, photographer: Sam, S.
- aperture - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- exine surface - dry, rehydration (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
- Ubisch bodies absent - dry, sputter coated with gold, photographer: Sam, S.
- cross section of pollen grain - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
Literature
- (1994) Exkursionsflora von Österreich : 1180
- (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; accessed 2024-11-10