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an online publication on recent pollen

Ajuga reptans

Taxonomy: Angiospermae, Lamiales, Lamiaceae, Ajuga

Links: http://flora.nhm-wien.ac.at/seiten-arten/ajuga-reptans.htm

Published: 2020-12-14

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): 21-25 µm,  shortest polar axis in equatorial view (LM): 21-25 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: colpate,  polarity: isopolar,  P/E-ratio: isodiametric,  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): elliptic,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: reticulate,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate, microreticulate, bireticulate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-discontinuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: polar area with perforate to reticulate ornamentation

Author(s) of diagnosis: Ulrich, Silvia; Heigl, Helmut

Pictures

habitus

1. habitus

flower(s)

2. flower(s)

pollen grains with generative cell and vegetative nucleus

3. pollen grains with generative cell and vegetative nucleus

pollen grain with generative cell and vegetative nucleus

4. pollen grain with generative cell and vegetative nucleus

upper focus

5. upper focus

optical section

6. optical section

lower focus

7. lower focus

polar view

8. polar view

equatorial view

9. equatorial view

hydrated pollen

10. hydrated pollen

hydrated pollen

11. hydrated pollen

hydrated pollen

12. hydrated pollen

polar view

13. polar view

equatorial view

14. equatorial view

detail of aperture

15. detail of aperture

exine surface

16. exine surface

polar area

17. polar area

dry pollen grains

18. dry pollen grains

pollen grain in cross section

19. pollen grain in cross section

detail of pollen grain with generative cell

20. detail of pollen grain with generative cell

interapertural area of pollen wall

21. interapertural area of pollen wall

interapertural area of pollen wall

22. interapertural area of pollen wall

interapertural area of pollen wall

23. interapertural area of pollen wall

apertural area of pollen wall

24. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

25. pollen wall at transition of aperture and interapertural area

pollen wall at transition of aperture and interapertural area

26. pollen wall at transition of aperture and interapertural area

vegetative nucleus (left) and generative cell (right); stacked endoplasmatic reticulum

27. vegetative nucleus (left) and generative cell (right); stacked endoplasmatic reticulum

detail of stacked endoplasmatic reticulum

28. detail of stacked endoplasmatic reticulum

crystals, in a cell of the anther wall

29. crystals, in a cell of the anther wall

Picture legend

  1. habitus, photographer: Ulrich, S.
  2. flower(s), photographer: Ulrich, S.
  3. pollen grains with generative cell and vegetative nucleus - fresh, rehydrated (water), aceto-carmine, photographer: Ulrich, S.
  4. pollen grain with generative cell and vegetative nucleus - fresh, rehydrated (water), aceto-carmine, photographer: Ulrich, S.
  5. upper focus - fresh, acetolyzed, unstained, photographer: Ulrich, S.
  6. optical section - fresh, acetolyzed, unstained, photographer: Ulrich, S.
  7. lower focus - fresh, acetolyzed, unstained, photographer: Ulrich, S.
  8. polar view - fresh, rehydrated (water), unstained, photographer: Ulrich, S.
  9. equatorial view - fresh, rehydrated (water), unstained, photographer: Ulrich, S.
  10. hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  11. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  12. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  13. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  14. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  15. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  16. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  17. polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  18. dry pollen grains - dry, sputter coated with gold, photographer: Ulrich, S.
  19. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  20. detail of pollen grain with generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  21. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  22. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  23. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Ulrich, S.
  24. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  25. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  26. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  27. vegetative nucleus (left) and generative cell (right); stacked endoplasmatic reticulum - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  28. detail of stacked endoplasmatic reticulum - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  29. crystals, in a cell of the anther wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.

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
  • FISCHER MA, ADLER W, OSWALD K (2005) Exkursionsflora für Österreich, Liechtenstein und Südtirol : 1180

Copyright and Citation

Cite this publication as:

Ulrich S., Heigl H. 2020. Ajuga reptans. In: PalDat - A palynological database. https://www.paldat.org/pub/Ajuga_reptans/304400;jsessionid=D7289B5A620F3FE33FB6979BD5B90F8C; accessed 2021-04-19

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