Fraxinus pennsylvanica
Taxonomy: Angiospermae, Lamiales, Oleaceae, Fraxinus
Links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:105864-2
Annotations: Fraxinus pennsylvanica Marshall
Published: 2026-07-28
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): -, size of hydrated pollen (LM): 26-30 µm, 21-25 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: 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. polar view
2. polar view
3. polar view
4. polar view
5. oblique view
6. equatorial view, ornamented aperture membranes
7. equatorial view
8. polar view, pentacolpate morphotype
9. polar view, pentacolpate morphotype
10. oblique view, ornamented aperture membrane, pentacolpate morphotype
Picture legend
- polar view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- polar view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- polar view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- polar view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- oblique view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- equatorial view, ornamented aperture membranes - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- equatorial view - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- polar view, pentacolpate morphotype - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- polar view, pentacolpate morphotype - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
- oblique view, ornamented aperture membrane, pentacolpate morphotype - fresh, glycerine-gelatine, basic fuchsin, photographer: Koelzer, K.
Literature
Copyright and Citation
Cite this publication as:
Koelzer K. 2026. Fraxinus pennsylvanica. In: PalDat - A palynological database. /pub/Fraxinus_pennsylvanica/307010; accessed 2026-07-30