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PalDat - Palynological Database

an online publication on recent pollen

Geranium canariense

Taxonomy: Angiospermae, Geraniales, Geraniaceae, Geranium

Published: 2020-09-28

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: porate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): isodiametric,  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: -,  nexine: -,  sexine: -,  SEMornamentation SEM: clavate, reticulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: colpus not visible in SEM, colporate aperture only visible in dry condition

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

flower(s)

1. flower(s)

slightly oblique polar view

2. slightly oblique polar view

equatorial view

3. equatorial view

aperture

4. aperture

exine surface

5. exine surface

dry pollen grains

6. dry pollen grains

aperture of dry pollen grain

7. aperture of dry pollen grain

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. slightly oblique polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  7. aperture of dry pollen grain - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

  • Weber M (1996) Apertural chambers in Geranium: development and ultrastructure. Sex Pl Reprod 9: 102-109
  • Weber M (1996) The existence of a special exine coating in Geranium robertianum pollen. Int J Plant Sci 157: 195-202
  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
  • 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. 2020. Geranium canariense. In: PalDat - A palynological database. https://www.paldat.org/pub/Geranium_canariense/305832;jsessionid=4252CF2A83FF59EB62AAB61C20D7E026; accessed 2024-03-28

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