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PalDat - Palynological Database

an online publication on recent pollen

Carex atrata

Taxonomy: Angiospermae, Poales, Cyperaceae, Carex

Published: 2021-01-04

Pollen Description

Shape, Size and Aperture

pollen unit: tetrad,  dispersal unit and peculiarities: pseudomonad,  size (pollen unit): medium-sized (26-50 µm),  size of hydrated pollen (LM): 36-40 µm,  shortest polar axis in equatorial view (LM): 26-30 µm,  longest polar axis in equatorial view (LM): 36-40 µm,  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: -,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: number varies,  aperture type: poroid,  aperture condition: poroidate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LM  ornamentation LM: gemmate, verrucate, scabrate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: microverrucate, perforate, verrucate,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: number of apertures 4 - 6

Author(s) of diagnosis: Halbritter, Heidemarie; Auer, Waltraud

Pictures

flower(s)

1. flower(s)

hydrated pollen

2. hydrated pollen

hydrated pollen

3. hydrated pollen

hydrated pollen

4. hydrated pollen

hydrated tetrads

5. hydrated tetrads

hydrated tetrad

6. hydrated tetrad

aperture

7. aperture

exine surface

8. exine surface

dry tetrads

9. dry tetrads

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. hydrated pollen - fresh, glycerine, unstained, photographer: Auer, W.
  3. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  4. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  5. hydrated tetrads - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. hydrated tetrad - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. dry tetrads - dry, sputter coated with gold, photographer: Halbritter, H.

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

Copyright and Citation

Cite this publication as:

Halbritter H., Auer W. 2021. Carex atrata. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Carex_atrata/304827;jsessionid=FB07BC0A29BBEFE26B525B5442790C21; accessed 2025-01-25

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