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PalDat - Palynological Database

an online publication on recent pollen

Sauromatum venosum

Taxonomy: Angiospermae, Alismatales, Araceae, Sauromatum

Published: 2016-10-27

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: inaperturate,  polarity: -,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): spheroidal,  outline in polar view (dry pollen): circular,  infoldings (dry pollen): not infolded,  aperture number: none,  aperture type: no aperture,  aperture condition: inaperturate,  aperture peculiarities: -

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: echinate, perforate,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: spongy-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: ektexine missing; ornamentation elements (echini) not resistant to acetolysis; shape in hydrated condition spheroidal or ovoid

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

Pictures

hydrated pollen grain

1. hydrated pollen grain

hydrated pollen grain

2. hydrated pollen grain

pollen surface

3. pollen surface

dry pollen grains

4. dry pollen grains

surface of a dry pollen grain

5. surface of a dry pollen grain

pollen grains in cross section

6. pollen grains in cross section

pollen wall; polysaccharidic spines

7. pollen wall; polysaccharidic spines

pollen wall; endexine stains for lipids; spines unstained

8. pollen wall; endexine stains for lipids; spines unstained

Ubisch body-like structures on inner anther wall

9. Ubisch body-like structures on inner anther wall

Picture legend

  1. hydrated pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. hydrated pollen grain - 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. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  5. surface of a dry pollen grain - dry, sputter coated with gold, photographer: Halbritter, H.
  6. pollen grains in cross section - fresh, glutaraldehyde & osmium, Thiéry-test, photographer: Weber, M.
  7. pollen wall; polysaccharidic spines - fresh, glutaraldehyde, Thiéry-test, photographer: Weber, M.
  8. pollen wall; endexine stains for lipids; spines unstained - fresh, glutaraldehyde & osmium, lipid-test, photographer: Weber, M.
  9. Ubisch body-like structures on inner anther 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:

Weber M., Halbritter H. 2016. Sauromatum venosum. In: PalDat - A palynological database. https://www.paldat.org/pub/Sauromatum_venosum/301762;jsessionid=8F56C59AD34570CC19DFAD86AB31A4FB; accessed 2025-04-30

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