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PalDat - Palynological Database

an online publication on recent pollen

Alkanna orientalis

Taxonomy: Angiospermae, unplaced, Boraginaceae, Alkanna

Published: 2021-07-05

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): 11-15 µm, 16-20 µm,  shortest polar axis in equatorial view (LM): 11-15 µm,  longest polar axis in equatorial view (LM): 16-20 µm,  shortest diameter in equatorial or polar view (LM): <10 µm,  longest diameter in equatorial or polar view (LM): 11-15 µm,  pollen class: colporate,  polarity: heteropolar,  P/E-ratio: prolate,  shape: -,  outline in polar view: circular,  dominant orientation (LM): equatorial,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

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

Miscellaneous

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

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

Pictures

flower(s)

1. flower(s)

equatorial view

2. equatorial view

equatorial view

3. equatorial view

equatorial view

4. equatorial view

polar view

5. polar view

polar view

6. polar view

hydrated pollen

7. hydrated pollen

hydrated pollen grains

8. hydrated pollen grains

polar view

9. polar view

equatorial view

10. equatorial view

detail of aperture

11. detail of aperture

exine surface

12. exine surface

polar area

13. polar area

dry pollen grains

14. dry pollen grains

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. equatorial view - fresh, glycerine, unstained, photographer: Heigl, H.
  3. equatorial view - fresh, glycerine, unstained, photographer: Heigl, H.
  4. equatorial view - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  5. polar view - fresh, glycerine, unstained, photographer: Heigl, H.
  6. polar view - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  7. hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  8. hydrated pollen grains - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  10. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  11. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  12. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  13. polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  14. dry pollen grains - dry, 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., Heigl H. 2021. Alkanna orientalis. In: PalDat - A palynological database. https://www.paldat.org/pub/Alkanna_orientalis/306389;jsessionid=0001558A3A5E262A30041A95DA10412E; accessed 2021-09-20

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