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PalDat - Palynological Database

an online publication on recent pollen

Drosera rotundifolia

Taxonomy: Spermatophyta, Droserales, Droseraceae, Drosera

Published: 2012-09-22

Pollen Description

Shape, Size and Aperture

pollen unit: tetrad,  dispersal unit and peculiarities: tetrad,  size (pollen unit): large (51-100 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: tetrad,  polarity: heteropolar,  P/E-ratio: -,  shape: irregular,  outline in polar view: no suitable term,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): no suitable term,  infoldings (dry pollen): no suitable term,  aperture number: >6,  aperture type: -,  aperture condition: porate,  aperture peculiarities: stephanoaperturate

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: microclavate, clavate,  suprasculpture SEM: -,  TEM  tectum: atectate,  infratectum: absent,  foot layer: continuous,  endexine: absent,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: apertures hidden, in hydrated state visible via intine protrusions; tetrads tetrahedral but sometimes irregular

Author(s) of diagnosis: Hesse, M.

Pictures

habitus

1. habitus

leaves

2. leaves

flower(s)

3. flower(s)

tetrad (tetrahedral)

4. tetrad (tetrahedral)

tetrad (decussate)

5. tetrad (decussate)

intine protrusions

6. intine protrusions

exine surface

7. exine surface

exine surface

8. exine surface

dry tetrads

9. dry tetrads

Ubisch bodies on inner locular wall

10. Ubisch bodies on inner locular wall

cytoplasmic protrusions and pollen wall (detail); primexine matrix on top of the pollen wall (arrows)

11. cytoplasmic protrusions and pollen wall (detail); primexine matrix on top of the pollen wall (arrows)

section of a tetrad, incomplete septum (arrows) in monads, cytoplasmic protrusions (arrowheads)

12. section of a tetrad, incomplete septum (arrows) in monads, cytoplasmic protrusions (arrowheads)

Picture legend

  1. habitus, photographer: Buchner, R.
  2. leaves, photographer: Buchner, R.
  3. flower(s), photographer: Buchner, R.
  4. tetrad (tetrahedral) - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. tetrad (decussate) - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. intine protrusions - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. exine surface - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. exine surface - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. dry tetrads - dry, sputter coated with gold, photographer: Halbritter, H.
  10. Ubisch bodies on inner locular wall - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  11. cytoplasmic protrusions and pollen wall (detail); primexine matrix on top of the pollen wall (arrows) - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Hesse, M.
  12. section of a tetrad, incomplete septum (arrows) in monads, cytoplasmic protrusions (arrowheads) - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Hesse, M.

Literature

  • Halbritter H, Hesse M, Weber, M (2012) The unique design of pollen tetrads in Dionaea and Drosera Grana 51: 148-157

Copyright and Citation

Cite this publication as:

Hesse M., Halbritter H., Buchner R. 2012. Drosera rotundifolia. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Drosera_rotundifolia/211739;jsessionid=86E934D557F302E17A2AEC93AA21CCB2; accessed 2025-01-10

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