Forgot your password?
 
 
PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Festuca pratensis

Taxonomy: Angiospermae, Poales, Poaceae, Festuca

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: prolate,  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: starch, polysaccharide vesicles,  cell number: 3-celled,  Ubisch bodies: present

Author(s) of diagnosis: Sam, Saskia

Pictures

flowers of Festuca pratensis

1. flowers of Festuca pratensis

upper focus

2. upper focus

optical section

3. optical section

lower focus

4. lower focus

pollen grain with vegetative cell and two sperm cells

5. pollen grain with vegetative cell and two sperm cells

equatorial view

6. equatorial view

aperture

7. aperture

exine surface

8. exine surface

dry pollen grains

9. dry pollen grains

pollen grain in cross section

10. pollen grain in cross section

interapertural area of pollen wall

11. interapertural area of pollen wall

apertural area of pollen wall

12. apertural area of pollen wall

vegetative nucleus (left) and sperm cell

13. vegetative nucleus (left) and sperm cell

Picture legend

  1. flowers of Festuca pratensis, photographer: Sam, S.
  2. upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  3. optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
  4. lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  5. pollen grain with vegetative cell and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Sam, S.
  6. equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
  7. aperture - fresh, DMP & critical point dried, photographer: Sam, S.
  8. exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
  9. dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
  10. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  11. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
  12. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
  13. vegetative nucleus (left) and sperm cell - 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. Festuca pratensis. In: PalDat - A palynological database. https://www.paldat.org/pub/Festuca_pratensis/301287;jsessionid=E72424E147C85E2D5B1530E188744DC0; accessed 2018-11-13

Previous Publications