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an online publication on recent pollen

Ulmus glabra

Taxonomy: Angiospermae, Rosales, Ulmaceae, Ulmus

Published: 2016-11-08

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: porate,  polarity: heteropolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): oblate,  shape (dry pollen): -,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: 5,  aperture type: porus,  aperture condition: porate,  aperture peculiarities: stephanoaperturate

Ornamentation and Structure

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


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

Annotations: dry pollen irregularely infolded or cup-shaped

Author(s) of diagnosis: Halbritter, Heidemarie


polar view

1. polar view

equatorial view

2. equatorial view


3. aperture

exine surface

4. exine surface

dry pollen grains

5. dry pollen grains

Picture legend

  1. polar view - 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. aperture - 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.


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  • Lian YH (1982) Apocynaceae, Bignoniaceae, Goodeniaceae, Lardizabalaceae, Menispermaceae, Nyctaginaceae, Papilionaceae, Rubiaceae, Samydaceae, Santalaceae, Sargentodoxaceae, Simaroubaceae, Thymelaeaceae, Ulmaceae. In: Angiosperm pollen flora of tropic and subtropic China. Inst Bot South China : 34-48, 60-65, 165-166, 183-186, 213-217, 244-246, 265-289, 305-325, 335-339, 351, 353-355, 375-377, 381-383

Copyright and Citation

Cite this publication as:

Halbritter H. 2016. Ulmus glabra. In: PalDat - A palynological database.;jsessionid=AEA95DA5F2C5944024A09C73969F4A8C; accessed 2020-09-23

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