Amelanchier ovalis
Taxonomy: Angiospermae, Rosales, Rosaceae, Amelanchier
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Amelanchier-ovalis-1.htm
Published: 2021-01-13
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): 21-25 µm, shortest polar axis in equatorial view (LM): 16-20 µm, longest polar axis in equatorial view (LM): 21-25 µm, shortest diameter in equatorial or polar view (LM): 21-25 µm, longest diameter in equatorial or polar view (LM): 21-25 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): prolate, shape (dry pollen): -, outline in polar view (dry pollen): lobate, infoldings (dry pollen): aperture(s) sunken, aperture number: 3, aperture type: colporus, aperture condition: tricolporate, colporate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: striate, nexine: -, sexine: -, SEM ornamentation SEM: perforate, striate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: continuous, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: lipids, starch, cell number: 2-celled, Ubisch bodies: absent
Annotations: endexine very thin
Author(s) of diagnosis: Loos, Claudia; Halbritter, Heidemarie; Heigl, Helmut
Pictures
1. flower(s)
2. polar view, upper focus
3. optical section
4. polar view, lower focus
5. pollen grain with generative cell (asterisk)
6. hydrated pollen
7. hydrated pollen
8. hydrated pollen
9. polar view
10. equatorial view
11. aperture
12. exine surface
13. dry pollen grains
14. polar view (dry pollen grain)
15. dry pollen grains in equatorial view
16. pollen grain in cross section
17. interapertural area of pollen wall
18. apertural area of pollen wall
19. pollen wall at transition of aperture and interapertural area
Picture legend
- flower(s), photographer: Halbritter, H.
- polar view, upper focus - fresh, acetolyzed, unstained, photographer: Loos, C.
- optical section - fresh, acetolyzed, unstained, photographer: Loos, C.
- polar view, lower focus - fresh, acetolyzed, unstained, photographer: Loos, C.
- pollen grain with generative cell (asterisk) - fixed, glutaraldehyde, aceto-carmine, photographer: Loos, C.
- 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.
- polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- 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.
- polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Loos, C.
- dry pollen grains in equatorial view - dry, sputter coated with gold, photographer: Loos, C.
- pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
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:
Loos C., Halbritter H., Heigl H. 2021. Amelanchier ovalis. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Amelanchier_ovalis/304897;jsessionid=CD8A336EE02C3DE7144A696E4559A6C0; accessed 2025-01-10