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PalDat - Palynological Database

an online publication on recent pollen

Merremia umbellata

Taxonomy: Angiospermae, Solanales, Convolvulaceae, Merremia

Published: 2017-08-24

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): large (51-100 µm),  pollen class: colpate,  polarity: isopolar,  shape: oblate,  outline in polar view: circular,  shape (dry pollen): prolate,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 6,  aperture type: colpus,  aperture condition: colpate, hexacolpate, stephanocolpate,  aperture peculiarities: aperture membrane ornamented, stephanoaperturate

Ornamentation and Structure

LMornamentation LM: -,  nexine: -,  sexine: -,  SEMornamentation SEM: perforate, microechinate,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -

Miscellaneous

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

Annotations

apertures often irregularly arranged

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

flower(s)

1. flower(s)

oblique polar view

2. oblique polar view

polar view,apertures irregularly arranged

3. polar view, apertures irregularly arranged

equatorial view

4. equatorial view

oblique view,apertures irregularly arranged

5. oblique view, apertures irregularly arranged

aperture

6. aperture

aperture detail

7. aperture detail

exine surface

8. exine surface

polar area

9. polar area

dry pollen

10. dry pollen

Ubisch bodies on locule wall

11. Ubisch bodies on locule wall

Picture legend

  1. flower(s), photographer: Berger, A.
  2. oblique polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. polar view, apertures irregularly arranged - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. oblique view, apertures irregularly arranged - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. aperture detail - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. polar area - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  11. 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., BERGER A., Merremia umbellata. In: PalDat (2017-08-24) - a palynological database. Published on the Internet https://www.paldat.org/pub/Merremia_umbellata/303074;jsessionid=33515D85C6845909FD78EA3192D14896 [accessed 2017-12-15]