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PalDat - Palynological Database

an online publication on recent pollen

Elymus repens

Taxonomy: Angiospermae, Poales, Poaceae, Elymus

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

Author(s) of diagnosis: Sam, Saskia

Pictures

inflorescence of Elymus repens

1. inflorescence of Elymus repens

flowers of Elymus repens

2. flowers of Elymus repens

upper focus

3. upper focus

optical section

4. optical section

lower focus

5. lower focus

pollen grain with vegetative cell and two sperm cells

6. pollen grain with vegetative cell and two sperm cells

equatorial view

7. equatorial view

aperture

8. aperture

exine surface

9. exine surface

dry pollen grains

10. dry pollen grains

anther wall with Ubisch bodies

11. anther wall with Ubisch bodies

interapertural area of pollen wall

12. interapertural area of pollen wall

apertural area of pollen wall

13. apertural area of pollen wall

two sperm cells

14. two sperm cells

vegetative nucleus

15. vegetative nucleus

Picture legend

  1. inflorescence of Elymus repens, photographer: Sam, S.
  2. flowers of Elymus repens, 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. pollen grain with vegetative cell and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Sam, S.
  7. equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
  8. aperture - fresh, DMP & critical point dried, photographer: Sam, S.
  9. exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
  10. dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
  11. anther wall with Ubisch bodies - fresh, DMP & critical point dried, photographer: Sam, S.
  12. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  13. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  14. two sperm cells - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  15. 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. Elymus repens. In: PalDat - A palynological database. https://www.paldat.org/pub/Elymus_repens/301286;jsessionid=A524E288530D749241CB9C4381B73AA4; accessed 2018-11-20

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