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an online publication on recent pollen

Asterostigma lividum

Taxonomy: Angiospermae, Alismatales, Araceae, Asterostigma

Published: 2016-10-06

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: -,  outline in polar view: -,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: none,  aperture type: no aperture,  aperture condition: inaperturate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: granulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: pollen grains ovoid, orientation unknown (prolate or oblate), pollen wall sometimes ruptured thus pretending an aperture (sulcus)

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

hydrated pollen grains (upper grain with ruptured exine)

1. hydrated pollen grains (upper grain with ruptured exine)

hydrated pollen grain

2. hydrated pollen grain

hydrated pollen grain

3. hydrated pollen grain

exine surface

4. exine surface

dry pollen grains

5. dry pollen grains

Ubisch bodies on inner anther wall

6. Ubisch bodies on inner anther wall

Picture legend

  1. hydrated pollen grains (upper grain with ruptured exine) - 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. hydrated pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. exine surface - 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. Ubisch bodies on inner anther wall - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.

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. 2016. Asterostigma lividum. In: PalDat - A palynological database. https://www.paldat.org/pub/Asterostigma_lividum/301518;jsessionid=AF9083587D7D77AEBE2221D6313E089E; accessed 2024-03-28

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