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PalDat - Palynological Database

an online publication on recent pollen

Alopecurus pratensis

Taxonomy: Angiospermae, Poales, Poaceae, Alopecurus

Published: 2016-08-08

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: ulcerate,  polarity: heteropolar,  shape: spheroidal,  outline in polar view: circular,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: 1,  aperture type: ulcus,  aperture condition: ulcerate,  aperture peculiarities: operculum, annulus

Ornamentation and Structure

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

Miscellaneous

pollen coatings: absent,  reserves in cytoplasm: polysaccharide vesicles, starch,  cell number: 3-celled,  Ubisch bodies: present

Annotations

tectum, infratectum and footlayer with channels

Author(s) of diagnosis: Sam, Saskia

Pictures

habitus of Alopecurus pratensis

1. habitus of Alopecurus pratensis

inflorescence of Alopecurus pratensis

2. inflorescence of Alopecurus pratensis

upper focus

3. upper focus

optical section

4. optical section

lower focus

5. lower focus

vegetative nucleus and two sperm cells

6. vegetative nucleus and two sperm cells

polar view

7. polar view

equatorial view

8. equatorial view

aperture

9. aperture

exine surface

10. exine surface

dry pollen grains

11. dry pollen grains

slightly oblique polar view of dry pollen grain

12. slightly oblique polar view of dry pollen grain

dry pollen grain in equatorial view

13. dry pollen grain in equatorial view

anther wall with Ubisch bodies

14. anther wall with Ubisch bodies

interapertural area of pollen wall

15. interapertural area of pollen wall

pollen wall at transition of aperture and interapertural area

16. pollen wall at transition of aperture and interapertural area

vegetative nucleus

17. vegetative nucleus

Picture legend

  1. habitus of Alopecurus pratensis, photographer: Sam, S.
  2. inflorescence of Alopecurus pratensis, photographer: Sam, S.
  3. upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  4. optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
  5. lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  6. vegetative nucleus and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Sam, S.
  7. polar view - fresh, DMP & critical point dried, photographer: Sam, S.
  8. equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
  9. aperture - fresh, DMP & critical point dried, photographer: Sam, S.
  10. exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
  11. dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
  12. slightly oblique polar view of dry pollen grain - dry, sputter coated with gold, photographer: Sam, S.
  13. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Sam, S.
  14. anther wall with Ubisch bodies - fresh, DMP & critical point dried, photographer: Sam, S.
  15. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
  16. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
  17. vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.

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:

Sam S. 2016. Alopecurus pratensis. In: PalDat - A palynological database. https://www.paldat.org/pub/Alopecurus_pratensis/301282;jsessionid=DA8F00B1306667B66F586701DA82D5FF; accessed 2018-11-14

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