PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

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

LMornamentation LM: scabrate,  nexine: present,  sexine: present,  SEMornamentation SEM: microechinate, microverrucate, microrugulate,  suprasculpture SEM: -,  TEMtectum: 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

equatorial view

1. equatorial view

equatorial view

2. equatorial view

equatorial view

3. equatorial view

polar view

4. polar view

equatorial view

5. equatorial view

distal polar view

6. distal polar view

proximal polar view

7. proximal polar view

proximal polar view,exine surface,adhering Ubisch bodies

8. proximal polar view, exine surface, adhering Ubisch bodies

equatorial view

9. equatorial view

distal polar view

10. distal polar view

Picture legend

  1. equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
  2. equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
  3. equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
  4. polar view - dry, acetolyzed & glycerine, unstained, photographer: Bouchal, J.
  5. equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
  6. distal polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
  7. proximal polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
  8. proximal polar view, exine surface, adhering Ubisch bodies - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bouchal, J.
  9. equatorial view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.
  10. distal polar view - dry, acetolyzed & sputter coated with gold, photographer: Bouchal, J.

Literature

  • Kvavadze EV (1988) The pollen of Taxodiaceae and its peculiarities Metsniereba
  • Bouchal, JM; Denk T. (2020) Low taxonomic resolution of papillate Cupressaceae pollen (former Taxodiaceae) impairs their applicability for palaeo-habitat reconstruction Grana 59
  • KEDVES, M. (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=E3B18D4DB220EA69696EB7385991F8EC; accessed 2020-09-19