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PalDat - Palynological Database

an online publication on recent pollen

Bromus inermis

Taxonomy: Angiospermae, Poales, Poaceae, Bromus

Published: 2016-07-13

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: isopolar,  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: annulus, operculum

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: Diethart, Bernadette

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

pollen grain with sperm cell (left) and vegetative nucleos (right)

3. pollen grain with sperm cell (left) and vegetative nucleos (right)

upper focus

4. upper focus

optical section

5. optical section

lower focus

6. lower focus

polar view

7. polar view

equatorial view

8. equatorial view

aperture

9. aperture

exine surface

10. exine surface

polar view (dry pollen grain)

11. polar view (dry pollen grain)

dry pollen grain in equatorial view

12. dry pollen grain in equatorial view

anther wall with Ubisch bodies

13. anther wall with Ubisch bodies

pollen grain in cross section

14. pollen grain in cross section

interapertural area of pollen wall

15. interapertural area of pollen wall

apertural area of pollen wall

16. apertural area of pollen wall

sperm cell and vegetative nucleus

17. sperm cell and vegetative nucleus

Picture legend

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

Literature

  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180

Copyright and Citation

Cite this publication as:

Diethart B. 2016. Bromus inermis. In: PalDat - A palynological database. https://www.paldat.org/pub/Bromus_inermis/301218;jsessionid=BFCF818BB44F416DE287B37E8DD5CB27; accessed 2018-11-21

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