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PalDat - Palynological Database

an online publication on recent pollen

Juniperus communis

Taxonomy: Gymnospermae, Pinales, Cupressaceae, Juniperus

Links: http://flora.nhm-wien.ac.at/seiten-arten/juniperus-communis-com.htm

Published: 2021-06-08

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): 26-30 µm,  shortest polar axis in equatorial view (LM): 26-30 µm,  longest polar axis in equatorial view (LM): 26-30 µm,  shortest diameter in equatorial or polar view (LM): 26-30 µm,  longest diameter in equatorial or polar view (LM): 26-30 µm,  pollen class: ulcerate,  polarity: heteropolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): polar,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: none,  aperture type: -,  aperture condition: ulcerate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: scabrate, verrucate, gemmate,  nexine: -,  sexine: -,  SEMornamentation SEM: granulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: adhering Ubisch bodies,  supratectal element: -

Miscellaneous

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

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

Pictures

hydrated Pollen

1. hydrated Pollen

hydrated Pollen

2. hydrated Pollen

hydrated Pollen

3. hydrated Pollen

hydrated pollen grains

4. hydrated pollen grains

polar distal view

5. polar distal view

polar proximal view

6. polar proximal view

ulcus

7. ulcus

exine surface (with adhering Ubisch-bodies)

8. exine surface (with adhering Ubisch-bodies)

dry pollen grains

9. dry pollen grains

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 grains - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. polar distal view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. polar proximal view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. ulcus - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. exine surface (with adhering Ubisch-bodies) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  9. 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., Auer W. 2021. Juniperus communis. In: PalDat - A palynological database. https://www.paldat.org/pub/Juniperus_communis/306110;jsessionid=22A57A4BB35128AFCF677DCC99706000; accessed 2021-06-15

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