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PalDat - Palynological Database

an online publication on recent pollen

Poa angustifolia

Taxonomy: Angiospermae, Poales, Poaceae, Poa

Published: 2016-07-18

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  size of hydrated pollen (LM): -,  shortest polar axis in equatorial view (LM): -,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): -,  longest diameter in equatorial or polar view (LM): -,  pollen class: ulcerate,  polarity: heteropolar,  P/E-ratio: prolate,  shape: -,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): interapertural area sunken,  aperture number: 1,  aperture type: ulcus,  aperture condition: ulcerate,  aperture peculiarities: annulus, operculum

Ornamentation and Structure

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

Miscellaneous

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

Author(s) of diagnosis: Diethart, Bernadette

Pictures

habitus

1. habitus

habitus

2. habitus

flower(s)

3. flower(s)

pollen grain with two sperm cells

4. pollen grain with two sperm cells

upper focus

5. upper focus

optical section

6. optical section

lower focus

7. lower focus

polar view

8. polar view

slightly oblique polar view

9. slightly oblique polar view

equatorial view

10. equatorial view

aperture

11. aperture

exine surface

12. exine surface

dry pollen grains

13. dry pollen grains

polar view (dry pollen grain)

14. polar view (dry pollen grain)

dry pollen grain in equatorial view

15. dry pollen grain in equatorial view

anther wall with Ubisch bodies

16. anther wall with Ubisch bodies

pollen grain in cross section

17. pollen grain in cross section

interapertural area of pollen wall

18. interapertural area of pollen wall

apertural area of pollen wall

19. apertural area of pollen wall

anther wall with Ubisch bodies

20. anther wall with Ubisch bodies

Picture legend

  1. habitus, photographer: Diethart, B.
  2. habitus, photographer: Diethart, B.
  3. flower(s), photographer: Diethart, B.
  4. pollen grain with two sperm cells - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  5. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  7. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  8. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  9. slightly oblique polar view - fresh, rehydrated (water) & sputter coated with gold & critical point dried, photographer: Diethart, B.
  10. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  12. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  13. dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
  14. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  15. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  16. anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  17. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  18. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  19. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
  20. anther wall with Ubisch bodies - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.

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:

Diethart B. 2016. Poa angustifolia. In: PalDat - A palynological database. https://www.paldat.org/pub/Poa_angustifolia/301220;jsessionid=ACFFF7D827616184031E1ACE4B111EFF; accessed 2024-03-28

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