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PalDat - Palynological Database

an online publication on recent pollen

Cyrtosperma beccarianum

Taxonomy: Angiospermae, Alismatales, Araceae, Cyrtosperma

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: ulcerate,  polarity: heteropolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): -,  outline in polar view (dry pollen): -,  infoldings (dry pollen): -,  aperture number: 1,  aperture type: ulcus,  aperture condition: ulcerate,  aperture peculiarities: aperture membrane psilate

Ornamentation and Structure

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

Miscellaneous

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

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

Pictures

polar view (distal)

1. polar view (distal)

polar view (proximal)

2. polar view (proximal)

exine surface

3. exine surface

pollen wall (interapertural area)

4. pollen wall (interapertural area)

pollen wall at transition of aperture and interapertural area

5. pollen wall at transition of aperture and interapertural area

Picture legend

  1. polar view (distal) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. polar view (proximal) - 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. pollen wall (interapertural area) - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Weber, M.
  5. pollen wall at transition of aperture and interapertural 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. Cyrtosperma beccarianum. In: PalDat - A palynological database. https://www.paldat.org/pub/Cyrtosperma_beccarianum/301773; accessed 2024-10-31

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