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PalDat - Palynological Database

an online publication on recent pollen

Metasequoia glyptostroboides

Taxonomy: Spermatophyta, Pinales, Taxodiaceae, Metasequoia

Published: 2005-06-01

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): -,  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): oblate,  shape (dry pollen): -,  outline in polar view (dry pollen): circular,  infoldings (dry pollen): -,  aperture number: none,  aperture type: no aperture,  aperture condition: inaperturate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: granulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: papilla,  supratectal element: -

Miscellaneous

pollen coatings: absent,  reserves in cytoplasm: -,  cell number: -,  Ubisch bodies: absent

Annotations: There is no aperture in the common sense. The exine is pulled off, the exine ruptures near the papilla.

Author(s) of diagnosis: Halbritter, H.

Pictures

polar view

1. polar view

equatorial view

2. equatorial view

exine surface

3. exine surface

papilla

4. papilla

dry pollen grains

5. dry pollen grains

Picture legend

  1. polar view - fresh, rehydrated (water) & sputter coated with gold & critical point dried, photographer: Halbritter, H.
  2. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. papilla - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

    Copyright and Citation

    Cite this publication as:

    Halbritter H. 2005. Metasequoia glyptostroboides. In: PalDat - A palynological database. https://www.paldat.org/pub/Metasequoia_glyptostroboides/100410;jsessionid=05AB475CE7DD911098311AA3464B6B21; accessed 2020-07-16

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