Metasequoia glyptostroboides
Taxonomy: Gymnospermae, Pinales, Cupressaceae, Metasequoia
Published: 2021-06-08
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): 26-30 µm, shortest polar axis in equatorial view (LM): 26-30 µm, longest polar axis in equatorial view (LM): 26-30 µm, shortest diameter in equatorial or polar view (LM): 26-30 µm, longest diameter in equatorial or polar view (LM): 26-30 µm, pollen class: -, polarity: heteropolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): oblique, P/E-ratio (dry pollen): -, shape (dry pollen): cup-shaped, outline in polar view (dry pollen): circular, infoldings (dry pollen): -, aperture number: 1, aperture type: leptoma, aperture condition: -, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: gemmate, verrucate, scabrate, nexine: present, sexine: present, SEM ornamentation SEM: microechinate, microverrucate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: papilla, adhering Ubisch bodies, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -
Author(s) of diagnosis: Halbritter, Heidemarie; Bouchal, Johannes Martin; Auer, Waltraud
Pictures
1. equatorial view
2. equatorial view
3. polar view
4. hydrated Pollen
5. hydrated Pollen
6. hydrated Pollen
7. polar view
8. equatorial view
9. exine surface
10. papilla
11. dry pollen grains
12. distal polar view
13. equatorial view
14. exine surface, proximal polar view
Picture legend
- equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
- equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
- polar view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
- hydrated Pollen - fresh, glycerine, unstained, photographer: Auer, W.
- hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
- hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
- polar view - fresh, rehydrated (water) & sputter coated with gold & critical point dried, photographer: Halbritter, H.
- equatorial view - 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.
- papilla - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
- distal polar view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
- equatorial view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
- exine surface, proximal polar view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
Literature
- (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
- (1988) The pollen of Taxodiaceae and its peculiarities Metsniereba
- (2020) Low taxonomic resolution of papillate Cupressaceae pollen (former Taxodiaceae) impairs their applicability for palaeo-habitat reconstruction Grana 59
Copyright and Citation
Cite this publication as:
Halbritter H., Bouchal J., Auer W. 2021. Metasequoia glyptostroboides. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Metasequoia_glyptostroboides/306125; accessed 2025-01-25