Forgot your password?
 
 
PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Apera spica-venti

Taxonomy: Angiospermae, Poales, Poaceae, Apera

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: microverrucate, 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

Annotations

shape hydrated spheroidal to prolate

Author(s) of diagnosis: Sam, Saskia

Pictures

habitus of Apera spica-venti

1. habitus of Apera spica-venti

flowers of Apera spica-venti

2. flowers of Apera spica-venti

upper focus

3. upper focus

optical section

4. optical section

lower focus

5. lower focus

vegetative nucleus and sperm cells

6. vegetative nucleus and 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

dry pollen grain

12. dry pollen grain

anther wall with Ubisch bodies

13. anther wall with Ubisch bodies

interapertural area of pollen wall

14. interapertural area of pollen wall

apertural area of pollen wall and Ubisch bodies

15. apertural area of pollen wall and Ubisch bodies

two sperm cells

16. two sperm cells

Ubisch bodies on inner anther wall

17. Ubisch bodies on inner anther wall

Picture legend

  1. habitus of Apera spica-venti, photographer: Sam, S.
  2. flowers of Apera spica-venti, 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 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. dry pollen grain - dry, sputter coated with gold, photographer: Sam, S.
  13. anther wall with Ubisch bodies - fresh, DMP & critical point dried, photographer: Sam, S.
  14. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  15. apertural area of pollen wall and Ubisch bodies - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  16. two sperm cells - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  17. Ubisch bodies on inner anther wall - 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. Apera spica-venti. In: PalDat - A palynological database. https://www.paldat.org/pub/Apera_spica-venti/301283;jsessionid=924CB2B17D91C864203DB91715B1EF1E; accessed 2018-11-18

Previous Publications