Sequoia sempervirens
Taxonomy: Gymnospermae, Pinales, Cupressaceae, Sequoioideae, Sequoia
Published: 2020-02-24
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): -, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: -, polarity: heteropolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): cup-shaped, outline in polar view (dry pollen): circular, infoldings (dry pollen): aperture(s) sunken, aperture number: 1, aperture type: leptoma, aperture condition: -, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: scabrate, nexine: present, sexine: present, SEM ornamentation SEM: microechinate, microrugulate, microverrucate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: granular, foot layer: continuous, endexine: lamellar-continuous, intine: -, wall peculiarities: papilla, adhering Ubisch bodies, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: present
Author(s) of diagnosis: Bouchal, Johannes Martin
Pictures
1. equatorial view
2. equatorial view
3. equatorial view
4. polar view
5. equatorial view
6. distal polar view
7. proximal polar view
8. proximal polar view, exine surface, adhering Ubisch bodies
9. equatorial view
10. distal polar view
Picture legend
- equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
- 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.
- equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
- distal polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
- proximal polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
- proximal polar view, exine surface, adhering Ubisch bodies - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
- equatorial view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
- distal polar view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
Literature
- (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
- (1985) LM, TEM and SEM investigations on recent inaperturate Gymnospermatophyta pollen grains Acta Biologica Szegediensis 31: 129–146
Copyright and Citation
Cite this publication as:
Bouchal J. 2020. Sequoia sempervirens. In: PalDat - A palynological database. https://www.paldat.org/pub/Sequoia_sempervirens/303652;jsessionid=DDBB848CEBC4ED611FAD5C634EB08A74; accessed 2024-04-25