Cornus mas
Taxonomy: Angiospermae, Cornales, Cornaceae, Cornus
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Cornus-mas.htm
Published: 2020-12-02
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): medium-sized (26-50 µm), size of hydrated pollen (LM): 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): 21-25 µm, pollen class: colporate, polarity: isopolar, P/E-ratio: oblate, shape: -, outline in polar view: triangular, dominant orientation (LM): oblique, P/E-ratio (dry pollen): prolate, shape (dry pollen): -, outline in polar view (dry pollen): triangular, infoldings (dry pollen): interapertural area sunken, aperture number: 3, aperture type: colporus, aperture condition: colporate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: psilate, nexine: -, sexine: -, SEM ornamentation SEM: microrugulate, microechinate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: continuous, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: starch, cell number: 2-celled, Ubisch bodies: absent
Annotations: footlayer sometimes discontinuous
Author(s) of diagnosis: Weber, Martina; Halbritter, Heidemarie; Heigl, Helmut
Pictures
1. flower(s)
2. flower(s)
3. hydrated pollen
4. hydrated pollen
5. hydrated pollen
6. polar view
7. equatorial view
8. detail of aperture
9. exine surface
10. dry pollen grains
11. pollen wall
12. pollen wall with discontinuous foot layer
13. pollen wall close to the aperture
Picture legend
- flower(s), photographer: Schneider, H.
- flower(s), photographer: Halbritter, H.
- 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.
- detail of 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.
- pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
- pollen wall with discontinuous foot layer - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.
- pollen wall close to the aperture - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
Literature
- (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:
Weber M., Halbritter H., Heigl H., Schneider H. 2020. Cornus mas. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Cornus_mas/304246; accessed 2025-01-25