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an online publication on recent pollen

Urospatha sagittifolia

Taxonomy: Angiospermae, Alismatales, Araceae, Urospatha

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: sulcate,  polarity: heteropolar,  P/E-ratio: oblate,  shape: -,  outline in polar view: elliptic,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): boat-shaped,  outline in polar view (dry pollen): elliptic,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 1,  aperture type: sulcus,  aperture condition: sulcate,  aperture peculiarities: aperture membrane psilate

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate,  suprasculpture SEM: -,  TEMtectum: semitectate,  infratectum: granular,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: endexine and intine in interapertural area very thin

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

Pictures

polar view (distal)

1. polar view (distal)

equatorial view

2. equatorial view

exine surface

3. exine surface

dry pollen grain

4. dry pollen grain

bi-cellular pollen grain with large sulcus

5. bi-cellular pollen grain with large sulcus

pollen wall at apertural area

6. pollen wall at apertural area

pollen wall (interapertural area)

7. pollen wall (interapertural area)

pollen wall (apertural area)

8. pollen wall (apertural area)

Picture legend

  1. polar view (distal) - 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. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. dry pollen grain - dry, sputter coated with gold, photographer: Halbritter, H.
  5. bi-cellular pollen grain with large sulcus - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.
  6. pollen wall at apertural area - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.
  7. pollen wall (interapertural area) - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.
  8. pollen wall (apertural area) - 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. Urospatha sagittifolia. In: PalDat - A palynological database. https://www.paldat.org/pub/Urospatha_sagittifolia/301853;jsessionid=1B5D83DB6207528675C1875713F9D49B; accessed 2021-01-19

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