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PalDat - Palynological Database

an online publication on recent pollen

Rivina humilis

Taxonomy: Angiospermae, Caryophyllales, Petiveriaceae, Rivina

Links: https://tropicos.org/name/24800051

Published: 2022-05-09

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: colpate,  polarity: -,  P/E-ratio: isodiametric,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): -,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: >6,  aperture type: colpus,  aperture condition: pantocolpate,  aperture peculiarities: aperture membrane psilate

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: psilate, foveolate, perforate, microechinate,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: On hydrated pollen grains, the microechini are often covered by remnants of the tapetum/locular fluid, and are only clearly visible on dry pollen grains.

Author(s) of diagnosis: Brkic, Amra

Pictures

hydrated pollen

1. hydrated pollen

hydrated pollen,aperture,aperture detail

2. hydrated pollen, aperture, aperture detail

hydrated pollen,aperture,aperture detail

3. hydrated pollen, aperture, aperture detail

hydrated pollen,exine surface

4. hydrated pollen, exine surface

hydrated pollen

5. hydrated pollen

dry pollen

6. dry pollen

dry pollen

7. dry pollen

Picture legend

  1. hydrated pollen - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Brkic, A.
  2. hydrated pollen, aperture, aperture detail - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Brkic, A.
  3. hydrated pollen, aperture, aperture detail - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Brkic, A.
  4. hydrated pollen, exine surface - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Brkic, A.
  5. hydrated pollen - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Brkic, A.
  6. dry pollen - dry, critical point dried & sputter coated with gold, photographer: Brkic, A.
  7. dry pollen - dry, critical point dried & sputter coated with gold, photographer: Brkic, A.

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
  • Halbritter H, Ulrich S, Grímsson F, Weber M, Zetter R, Hesse M, Buchner R, Svojtka M, Frosch-Radivo A (2018) Illustrated Pollen Terminology 2nd Edition

Copyright and Citation

Cite this publication as:

Brkic A. 2022. Rivina humilis. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Rivina_humilis/306549; accessed 2025-04-28