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an online publication on recent pollen

Helwingia japonica

Taxonomy: Angiospermae, Cornales, Cornaceae, Helwingia

Published: 2016-11-29

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): -,  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: -,  polarity: -,  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: -,  aperture type: -,  aperture condition: -,  aperture peculiarities: -

Ornamentation and Structure

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

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch, lipids,  cell number: 2-celled,  Ubisch bodies: present

Author(s) of diagnosis: Weber, Martina

Pictures

pollen wall

1. pollen wall

pollen wall

2. pollen wall

generative cell and vegetative nucleus

3. generative cell and vegetative nucleus

Picture legend

  1. pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
  2. pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.
  3. generative cell and vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.

Literature

    Copyright and Citation

    Cite this publication as:

    Weber M. 2016. Helwingia japonica. In: PalDat - A palynological database. https://www.paldat.org/pub/Helwingia_japonica/302522;jsessionid=B3F0ECC4D5D24B833710D0D23DDF83BA; accessed 2024-03-29

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