Forgot your password?
 
 
PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Carex distans

Taxonomy: Angiospermae, Poales, Cyperaceae, Carex

Published: 2016-11-28

Pollen Description

Shape, Size and Aperture

pollen unit: tetrad,  dispersal unit and peculiarities: pseudomonad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: tetrad,  polarity: heteropolar,  shape: no suitable term,  outline in polar view: circular,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 5,  aperture type: poroid,  aperture condition: poroidate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: scabrate,  nexine: -,  sexine: -,  SEMornamentation SEM: microechinate, perforate, fossulate,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch,  cell number: 2-celled,  Ubisch bodies: absent

Annotations

pseudomonads (including remnants of 3 aborted pollen grains); number of apertures mostly 5 but also 6; intine in interaperturate area thicker than in aperture

Author(s) of diagnosis: Loos, Claudia; Halbritter, Halbritter

Pictures

flower(s)

1. flower(s)

acetolyzed tetrad,equatorial view

2. acetolyzed tetrad, equatorial view

pollen grain with vegetative nucleus and generative cell

3. pollen grain with vegetative nucleus and generative cell

hydrated tetrads

4. hydrated tetrads

hydrated tetrad,equatorial view

5. hydrated tetrad, equatorial view

aperture

6. aperture

exine surface

7. exine surface

dry tetrads

8. dry tetrads

pollen grain in cross section

9. pollen grain in cross section

apertural area of pollen wall

10. apertural area of pollen wall

interapertural area of pollen wall

11. interapertural area of pollen wall

pollen wall at transition of aperture and interapertural area

12. pollen wall at transition of aperture and interapertural area

vegetative nucleus

13. vegetative nucleus

Picture legend

  1. flower(s), photographer: Loos, C.
  2. acetolyzed tetrad, equatorial view - fresh, acetolyzed, unstained, photographer: Loos, C.
  3. pollen grain with vegetative nucleus and generative cell - fixed, glutaraldehyde, aceto-carmine, photographer: Loos, C.
  4. hydrated tetrads - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. hydrated tetrad, equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. dry tetrads - dry, sputter coated with gold, photographer: Halbritter, H.
  9. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
  10. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
  11. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
  12. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
  13. vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.

Literature

  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
  • 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:

Loos C., Halbritter H. 2016. Carex distans. In: PalDat - A palynological database. https://www.paldat.org/pub/Carex_distans/302453;jsessionid=A3439E8DF4B91845AE661E69FDAD65F5; accessed 2018-11-18

Previous Publications