Betula utilis
Taxonomy: Angiospermae, Fagales, Betulaceae, Betula
Links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:295229-1
Published: 2026-09-30
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, shortest polar axis in equatorial view (LM): 21-25 µm, longest polar axis in equatorial view (LM): 26-30 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: porate, polarity: -, P/E-ratio: -, shape: -, outline in polar view: -, dominant orientation (LM): oblique, P/E-ratio (dry pollen): -, shape (dry pollen): -, outline in polar view (dry pollen): -, infoldings (dry pollen): -, aperture number: 3, aperture type: porus, aperture condition: porate, triporate, aperture peculiarities: operculum, annulus, oncus
Ornamentation and Structure
LM ornamentation LM: scabrate, 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: -
Author(s) of diagnosis: Koelzer, Karen
Pictures
1. hydrated pollen, polar view
2. hydrated pollen, polar view
3. hydrated pollen, polar view
4. hydrated pollen, equatorial view, aperture
5. hydrated pollen, equatorial view
6. hydrated pollen, equatorial view
7. hydrated pollen, equatorial view
8. hydrated pollen, equatorial view
9. hydrated pollen
10. hydrated pollen
11. hydrated pollen
Picture legend
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view, aperture - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
Literature
Copyright and Citation
Cite this publication as:
Koelzer K. 2026. Betula utilis. In: PalDat - A palynological database. /pub/Betula_utilis/307079; accessed 2026-10-01