PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Amelanchier ovalis

Taxonomy: Angiospermae, Rosales, Rosaceae, Amelanchier

Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Amelanchier-ovalis-1.htm

Published: 2021-01-13

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): small (10-25 µm),  size of hydrated pollen (LM): 21-25 µm,  shortest polar axis in equatorial view (LM): 16-20 µm,  longest polar axis in equatorial view (LM): 21-25 µm,  shortest diameter in equatorial or polar view (LM): 21-25 µm,  longest diameter in equatorial or polar view (LM): 21-25 µm,  pollen class: colporate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: striate,  nexine: -,  sexine: -,  SEMornamentation SEM: striate, perforate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch, lipids,  cell number: 2-celled,  Ubisch bodies: absent

Annotations: endexine very thin

Author(s) of diagnosis: Loos, Claudia; Halbritter, Heidemarie; Heigl, Helmut

Pictures

flower(s)

1. flower(s)

polar view,upper focus

2. polar view, upper focus

optical section

3. optical section

polar view,lower focus

4. polar view, lower focus

pollen grain with generative cell (asterisk)

5. pollen grain with generative cell (asterisk)

hydrated pollen

6. hydrated pollen

hydrated pollen

7. hydrated pollen

hydrated pollen

8. hydrated pollen

polar view

9. 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 grains in equatorial view

15. dry pollen grains in equatorial view

pollen grain in cross section

16. pollen grain in cross section

interapertural area of pollen wall

17. interapertural area of pollen wall

apertural area of pollen wall

18. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

19. pollen wall at transition of aperture and interapertural area

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. polar view, upper focus - fresh, acetolyzed, unstained, photographer: Loos, C.
  3. optical section - fresh, acetolyzed, unstained, photographer: Loos, C.
  4. polar view, lower focus - fresh, acetolyzed, unstained, photographer: Loos, C.
  5. pollen grain with generative cell (asterisk) - fixed, glutaraldehyde, aceto-carmine, photographer: Loos, C.
  6. hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  7. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  8. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  9. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  11. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  12. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  13. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  14. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Loos, C.
  15. dry pollen grains in equatorial view - dry, sputter coated with gold, photographer: Loos, C.
  16. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
  17. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
  18. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
  19. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.

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:

Loos C., Halbritter H., Heigl H. 2021. Amelanchier ovalis. In: PalDat - A palynological database. https://www.paldat.org/pub/Amelanchier_ovalis/304897;jsessionid=A6C45988B2203CBE96B67473FCF7DD98; accessed 2024-03-29

Previous Publications