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PalDat - Palynological Database

an online publication on recent pollen

Ulearum sagittatum

Taxonomy: Angiospermae, Alismatales, Araceae, Ulearum

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: inaperturate,  polarity: -,  shape: spheroidal,  outline in polar view: circular,  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

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

Miscellaneous

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

Annotations

ektexine missing; ornamentation elements not resistant to acetolysis

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

Pictures

hydrated pollen grain

1. hydrated pollen grain

pollen surface

2. pollen surface

anther with pollen grains in cross section

3. anther with pollen grains in cross section

pollen grain in cross section

4. pollen grain in cross section

detail of pollen wall

5. detail of pollen wall

Picture legend

  1. hydrated pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. pollen surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. anther with pollen grains in cross section - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
  5. detail of 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:

Weber M., Halbritter H. 2016. Ulearum sagittatum. In: PalDat - A palynological database. https://www.paldat.org/pub/Ulearum_sagittatum/301852;jsessionid=2CD7D8BA5C6B9A6181A6F59CCCF02B27; accessed 2018-11-14

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