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an online publication on recent pollen

Pseudodracontium siamense

Taxonomy: Angiospermae, Alismatales, Araceae, Pseudodracontium

Published: 2016-11-03

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: plicate,  polarity: heteropolar,  P/E-ratio: oblate,  shape: -,  outline in polar view: elliptic,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): no suitable term,  outline in polar view (dry pollen): no suitable term,  infoldings (dry pollen): no suitable term,  aperture number: none,  aperture type: no aperture,  aperture condition: inaperturate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: -,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: absent,  foot layer: absent,  endexine: spongy-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: ornamentation elements not resistant to acetolysis

Author(s) of diagnosis: Weber, Martina; Halbritter, Heidemarie

Pictures

hydrated pollen

1. hydrated pollen

equatorial view

2. equatorial view

pollen surface

3. pollen surface

pollen surface

4. pollen surface

dry pollen grains

5. dry pollen grains

pollen grain in cross section

6. pollen grain in cross section

pollen wall

7. pollen wall

Picture legend

  1. hydrated pollen - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. pollen surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. pollen surface - 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.
  6. pollen grain in cross section - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.
  7. pollen wall - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.

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:

Weber M., Halbritter H. 2016. Pseudodracontium siamense. In: PalDat - A palynological database. https://www.paldat.org/pub/Pseudodracontium_siamense/301843;jsessionid=E875E0C4807FE4931F7633C74B4B2422; accessed 2024-03-29

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