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PalDat - Palynological Database

an online publication on recent pollen

Sherardia arvensis

Taxonomy: Spermatophyta, Gentianales, Rubiaceae, Sherardia

Published: 2005-06-01

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): small (10-25 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: -,  polarity: isopolar,  P/E-ratio: oblate,  shape: -,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): circular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: >6,  aperture type: -,  aperture condition: colpate,  aperture peculiarities: aperture membrane psilate, stephanoaperturate

Ornamentation and Structure

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

Miscellaneous

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

Author(s) of diagnosis: Halbritter, H.

Pictures

flower(s)

1. flower(s)

polar view

2. polar view

slightly oblique equatorial view

3. slightly oblique equatorial view

exine surface

4. exine surface

dry pollen grain in equatorial view

5. dry pollen grain in equatorial view

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. slightly oblique equatorial view - 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 grain in equatorial view - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

    Copyright and Citation

    Cite this publication as:

    Halbritter H. 2005. Sherardia arvensis. In: PalDat - A palynological database. https://www.paldat.org/pub/Sherardia_arvensis/109118;jsessionid=BE4CB26EA9F452689F3D0C81F0308205; accessed 2024-04-24

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