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an online publication on recent pollen

Populus nigra

Taxonomy: Angiospermae, Malpighiales, Salicaceae, Populus

Published: 2016-08-08

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: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  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: scabrate,  nexine: -,  sexine: -,  SEMornamentation SEM: no suitable term,  suprasculpture SEM: -,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: enedexine thin; ornamentation occasional microechinate

Author(s) of diagnosis: Halbritter, Halbritter; Sam, Saskia

Pictures

hydrated pollen grains

1. hydrated pollen grains

hydrated pollen grain

2. hydrated pollen grain

exine surface

3. exine surface

dry pollen grains

4. dry pollen grains

Picture legend

  1. hydrated pollen grains - fresh, DMP & critical point dried, photographer: Halbritter, H.
  2. hydrated pollen grain - fresh, DMP & critical point dried, photographer: Halbritter, H.
  3. exine surface - fresh, DMP & critical point dried, photographer: Halbritter, H.
  4. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
  • 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., Sam S. 2016. Populus nigra. In: PalDat - A palynological database. https://www.paldat.org/pub/Populus_nigra/301291;jsessionid=AE33D3C1142D18A019F2C76A27957FB9; accessed 2020-08-14

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