Fraxinus americana
Taxonomy: Angiospermae, Lamiales, Oleaceae, Fraxinus
Links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:105770-2
Published: 2026-06-11
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): -, size of hydrated pollen (LM): 21-25 µm, 26-30 µm, shortest polar axis in equatorial view (LM): 21-25 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): 26-30 µm, pollen class: colpate, polarity: isopolar, P/E-ratio: oblate, shape: -, outline in polar view: quadrangular, dominant orientation (LM): polar, P/E-ratio (dry pollen): -, shape (dry pollen): -, outline in polar view (dry pollen): -, infoldings (dry pollen): -, aperture number: 4, aperture type: colpus, aperture condition: colpate, tetracolpate, aperture peculiarities: aperture membrane ornamented
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: -, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -
Annotations: sometimes with 5 apertures
Author(s) of diagnosis: Koelzer, Karen
Pictures
1. hydrated pollen, polar view
2. hydrated pollen, polar view
3. hydrated pollen, oblique view, ornamented aperture membranes
4. hydrated pollen, polar view
5. hydrated pollen
6. hydrated pollen, equatorial view, aperture, ornamented aperture membrane
7. hydrated pollen, equatorial view, ornamented aperture membrane
8. hydrated pollen, equatorial view
9. hydrated pollen, polar view, pentacolpate morphotype
Picture legend
- hydrated pollen, polar view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, oblique view, ornamented aperture membranes - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, equatorial view, aperture, ornamented aperture membrane - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, equatorial view, ornamented aperture membrane - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, polar view, pentacolpate morphotype - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
Literature
Copyright and Citation
Cite this publication as:
Koelzer K. 2026. Fraxinus americana. In: PalDat - A palynological database. /pub/Fraxinus_americana/307015; accessed 2026-06-12