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PalDat - Palynological Database

an online publication on recent pollen

Crescentia alata

Taxonomy: Angiospermae, Lamiales, Bignoniaceae, Crescentia

Published: 2020-04-22

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): large (51-100 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: colpate,  polarity: isopolar,  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: colpus,  aperture condition: colpate,  aperture peculiarities: margo

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: -,  reserves in cytoplasm: -,  cell number: -,  Ubisch bodies: present

Annotations: pollen with more than 3 apertures as well, pantocolpate, apertures often irregularly arranged

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

habitus

1. habitus

flower(s)

2. flower(s)

flower(s)

3. flower(s)

hydrated pollen

4. hydrated pollen

hydrated pollen

5. hydrated pollen

polar view

6. polar view

oblique polar view,tetracolpate pollen grain

7. oblique polar view, tetracolpate pollen grain

oblique equatorial view

8. oblique equatorial view

oblique equatorial view

9. oblique equatorial view

equatorial view,tetracolpate pollen grain

10. equatorial view, tetracolpate pollen grain

hydrated pollen,pantocolpate

11. hydrated pollen, pantocolpate

aperture

12. aperture

aperture detail

13. aperture detail

aperture

14. aperture

exine surface

15. exine surface

exine surface

16. exine surface

polar area

17. polar area

polar area,tetracolpate pollen grain

18. polar area, tetracolpate pollen grain

dry pollen

19. dry pollen

dry pollen

20. dry pollen

Ubisch bodies on locule wall

21. Ubisch bodies on locule wall

Picture legend

  1. habitus, photographer: Weis, B.
  2. flower(s), photographer: Weis, B.
  3. flower(s), photographer: Weis, B.
  4. hydrated pollen - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. hydrated pollen - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. oblique polar view, tetracolpate pollen grain - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. oblique equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. oblique equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. equatorial view, tetracolpate pollen grain - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  11. hydrated pollen, pantocolpate - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  12. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  13. aperture detail - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  14. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  15. exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  16. exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  17. polar area - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  18. polar area, tetracolpate pollen grain - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  19. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  20. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  21. Ubisch bodies on locule wall - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.

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:

Halbritter H., Weis B. 2020. Crescentia alata. In: PalDat - A palynological database. https://www.paldat.org/pub/Crescentia_alata/303632;jsessionid=44ABF4995E3D12A53965DD60A1CE6B7D; accessed 2020-08-12

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