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PalDat - Palynological Database

an online publication on recent pollen

Steudnera assamica

Taxonomy: Angiospermae, Alismatales, Araceae, Steudnera

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),  pollen class: plicate,  polarity: -,  shape: oblate,  outline in polar view: elliptic,  shape (dry pollen): oblate,  outline in polar view (dry pollen): elliptic,  infoldings (dry pollen): not infolded,  aperture number: none,  aperture type: no aperture,  aperture condition: inaperturate,  aperture peculiarities: -

Ornamentation and Structure

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

Miscellaneous

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

Annotations

ektexine missing; ornamentation elements not resistant to acetolysis

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

Pictures

hydrated pollen grains

1. hydrated pollen grains

equatorial view

2. equatorial view

pollen surface

3. pollen surface

equatorial view

4. equatorial view

dry pollen grains

5. dry pollen grains

dry pollen grain in equatorial view

6. dry pollen grain in equatorial view

pollen surface

7. pollen surface

pollen grain with generative cell

8. pollen grain with generative cell

pollen wall

9. pollen wall

Picture legend

  1. hydrated pollen grains - 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. equatorial view - 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. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Halbritter, H.
  7. pollen surface - dry, sputter coated with gold, photographer: Halbritter, H.
  8. pollen grain with generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
  9. pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, 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:

Halbritter H., Weber M. 2016. Steudnera assamica. In: PalDat - A palynological database. https://www.paldat.org/pub/Steudnera_assamica/301847;jsessionid=B32201D1B969E2CF6237B6104B64A53E; accessed 2019-08-18

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