PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Dioscorea communis

Taxonomy: Angiospermae, Dioscoreales, Dioscoreaceae, Dioscorea

Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Dioscorea-communis.htm

Published: 2021-03-08

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): 31-35 µm,  shortest polar axis in equatorial view (LM): 26-30 µm,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): -,  longest diameter in equatorial or polar view (LM): 31-35 µm,  pollen class: sulcate,  polarity: heteropolar,  P/E-ratio: oblate,  shape: -,  outline in polar view: elliptic,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): oblate,  shape (dry pollen): -,  outline in polar view (dry pollen): no suitable term,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 2,  aperture type: sulcus,  aperture condition: sulcate, disulcate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: reticulate,  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: the apertures are situated distally parallel to the equatorial plane or almost at the equator, thus the pollen grains are somewhat heteropolar

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

Pictures

hydrated pollen

1. hydrated pollen

hydrated pollen

2. hydrated pollen

hydrated pollen

3. hydrated pollen

hydrated pollen

4. hydrated pollen

polar view

5. polar view

equatorial view

6. equatorial view

equatorial view

7. equatorial view

aperture

8. aperture

sulcus border

9. sulcus border

exine surface

10. exine surface

dry pollen

11. dry pollen

Ubisch bodies on locule wall

12. Ubisch bodies on locule wall

Picture legend

  1. hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  2. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  3. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  4. hydrated pollen - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. sulcus border - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  11. dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
  12. Ubisch bodies on locule wall - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.

Literature

    Copyright and Citation

    Cite this publication as:

    Halbritter H., Heigl H. 2021. Dioscorea communis. In: PalDat - A palynological database. https://www.paldat.org/pub/Dioscorea_communis/305578;jsessionid=C19FDD02321697AD78292D5AA3934E5A; accessed 2024-03-28

    Previous Publications