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PalDat - Palynological Database

an online publication on recent pollen

Chelonanthus purpurascens

Taxonomy: Angiospermae, Gentianales, Gentianaceae, Chelonanthus

Published: 2023-10-24

Pollen Description

Shape, Size and Aperture

pollen unit: polyad,  dispersal unit and peculiarities: polyad,  size (pollen unit): very large (>100 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: polyad,  polarity: heteropolar,  P/E-ratio: -,  shape: -,  outline in polar view: -,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): -,  outline in polar view (dry pollen): -,  infoldings (dry pollen): -,  aperture number: number varies,  aperture type: porus,  aperture condition: porate,  aperture peculiarities: -

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: reticulate,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: polyads consisitng of 8 connected tetrads (32 monads); apertures mostly 3, 4 as well; each monad with a big, crown-like appendix at the distal pole

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

polyads

1. polyads

polyad

2. polyad

polyad

3. polyad

tetrad

4. tetrad

tetrad

5. tetrad

tetrad

6. tetrad

aperture

7. aperture

aperture

8. aperture

monad with crown-like appendix

9. monad with crown-like appendix

exine surface

10. exine surface

Picture legend

  1. polyads - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. polyad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. polyad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. tetrad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. tetrad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. tetrad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. monad with crown-like appendix - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.

Literature

  • Halbritter, H (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:

Halbritter H. 2023. Chelonanthus purpurascens. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Chelonanthus_purpurascens/306629;jsessionid=45747C3F3C9FD6781CC602803DD4EEBE; accessed 2025-01-10

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