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PalDat - Palynological Database

an online publication on recent pollen

Microrrhinum minus

Taxonomy: Angiospermae, Lamiales, Plantaginaceae, Microrrhinum

Published: 2016-02-08

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): -,  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: colporate,  polarity: heteropolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  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: perforate,  nexine: present,  sexine: present,  SEMornamentation SEM: 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: lipids,  cell number: 2-celled,  Ubisch bodies: absent

Annotations: ornamentation perforate to microreticulate.

Author(s) of diagnosis: Ulrich, Silvia; Halbritter, Heidemarie

Pictures

habitus

1. habitus

flower(s)

2. flower(s)

flower(s)

3. flower(s)

 upper focus

4. upper focus

 optical section

5. optical section

 lower focus

6. lower focus

hydrated pollen, polar view

7. hydrated pollen, polar view

hydrated pollen, equatorial view

8. hydrated pollen, equatorial view

2-celled pollen

9. 2-celled pollen

no starch detected

10. no starch detected

hydrated pollen, polar view

11. hydrated pollen, polar view

polar view

12. polar view

hydrated pollen, equatorial view

13. hydrated pollen, equatorial view

equatorial view

14. equatorial view

slightly oblique equatorial view

15. slightly oblique equatorial view

aperture

16. aperture

detail of aperture

17. detail of aperture

detail of aperture

18. detail of aperture

exine surface

19. exine surface

exine surface

20. exine surface

exine surface

21. exine surface

polar area

22. polar area

dry pollen

23. dry pollen

dry pollen

24. dry pollen

dry pollen

25. dry pollen

cross section of pollen grain

26. cross section of pollen grain

pollen wall, aperture area

27. pollen wall, aperture area

pollen wall, aperture area

28. pollen wall, aperture area

pollen wall, aperture area

29. pollen wall, aperture area

pollen wall at transition of aperture and interapertural area

30. pollen wall at transition of aperture and interapertural area

pollen wall at transition of aperture and interapertural area

31. pollen wall at transition of aperture and interapertural area

pollen wall at transition of aperture and interapertural area

32. pollen wall at transition of aperture and interapertural area

pollen wall at transition of aperture and interapertural area

33. pollen wall at transition of aperture and interapertural area

pollen wall, interapertural area

34. pollen wall, interapertural area

pollen wall, interapertural area

35. pollen wall, interapertural area

pollen wall, interapertural area

36. pollen wall, interapertural area

cytoplasm with generative cell  and organells

37. cytoplasm with generative cell and organells

cytoplasm with organells

38. cytoplasm with organells

Picture legend

  1. habitus, photographer: Ulrich, S.
  2. flower(s), photographer: Ulrich, S.
  3. flower(s), photographer: Halbritter, H.
  4. upper focus - dry, acetolyzed, unstained, photographer: Ulrich, S.
  5. optical section - dry, acetolyzed, unstained, photographer: Ulrich, S.
  6. lower focus - dry, acetolyzed, unstained, photographer: Ulrich, S.
  7. hydrated pollen, polar view - dry, rehydrated (water), unstained, photographer: Ulrich, S.
  8. hydrated pollen, equatorial view - dry, rehydrated (water), unstained, photographer: Ulrich, S.
  9. 2-celled pollen - dry, unfixed, aceto-carmine, photographer: Ulrich, S.
  10. no starch detected - dry, unfixed, iodine, photographer: Ulrich, S.
  11. hydrated pollen, polar view - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  12. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  13. hydrated pollen, equatorial view - fresh, rehydration (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: Halbritter, H.
  15. slightly oblique equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  16. aperture - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  17. detail of aperture - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  18. detail of aperture - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  19. exine surface - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  20. exine surface - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  21. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  22. polar area - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Ulrich, S.
  23. dry pollen - dry, sputter coated with gold, photographer: Ulrich, S.
  24. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  25. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  26. cross section of pollen grain - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  27. pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  28. pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Ulrich, S.
  29. pollen wall, aperture area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  30. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Ulrich, S.
  31. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  32. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  33. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  34. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  35. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Ulrich, S.
  36. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Ulrich, S.
  37. cytoplasm with generative cell and organells - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Ulrich, S.
  38. cytoplasm with organells - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, 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

Copyright and Citation

Cite this publication as:

Ulrich S., Halbritter H. 2016. Microrrhinum minus. In: PalDat - A palynological database. https://www.paldat.org/pub/Microrrhinum_minus/300420; accessed 2024-11-01

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