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PalDat - Palynological Database

an online publication on recent pollen

Actaea spicata

Taxonomy: Spermatophyta, Ranunculales, Ranunculaceae, Actaea

Published: 2005-06-01

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): -,  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: -,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: -,  aperture condition: colpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LM  ornamentation LM: psilate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: perforate, microechinate,  suprasculpture SEM: -,  TEM  tectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: lipids, starch,  cell number: 2-celled,  Ubisch bodies: present

Author(s) of diagnosis: Oberschneider, W.

Pictures

flower(s)

1. flower(s)

upper focus

2. upper focus

optical section

3. optical section

lower focus

4. lower focus

generative cell (dark) and vegetative nucleus

5. generative cell (dark) and vegetative nucleus

polar view

6. polar view

equatorial view

7. equatorial view

detail of aperture

8. detail of aperture

exine surface

9. exine surface

polar view of dry pollen grain

10. polar view of dry pollen grain

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

pollen wall (interapertural area)

12. pollen wall (interapertural area)

aperture with ornamented colpus membrane

13. aperture with ornamented colpus membrane

pollen wall (left) and tapetum wall with Ubisch bodies (right)

14. pollen wall (left) and tapetum wall with Ubisch bodies (right)

Picture legend

  1. flower(s), photographer: Oberschneider, W.
  2. upper focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  3. optical section - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  4. lower focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  5. generative cell (dark) and vegetative nucleus - fresh, unfixed, aceto-carmine, photographer: Oberschneider, W.
  6. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  7. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  8. detail of aperture - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Oberschneider, W.
  9. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  10. polar view of dry pollen grain - dry, sputter coated with gold, photographer: Oberschneider, W.
  11. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Oberschneider, W.
  12. pollen wall (interapertural area) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  13. aperture with ornamented colpus membrane - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  14. pollen wall (left) and tapetum wall with Ubisch bodies (right) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.

Literature

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  • Daumann E (1969) Zur Blütenmorphologie und Bestäubungsökologie einiger Ranunculaceen (Cimicifuga L., Actaea L., Thalictrum L.). Preslia 41: 213-219
  • Erdtman GEA (1963) An introduction to a scandinavian pollen flora - II. Almquist & Wiksell, Uppsala : 1-89
  • Fægri KEA (1964) Text book of pollen analysis. Scandinavian University Books, Munksgaard : 1-237
  • Fischer H (1890) Beiträge zur vergleichenden Morphologie der Pollenkörner. Breslau (Thesis) : 1-72
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  • Khan HA (1991) Palynotaxonomy and phylogeny of Ranunculaceae. Geophytology 21: 207-210
  • Kumazawa M (1937) Pollen morphology in Ranunculaceae, Lardizabalaceae and Berberidaceae. J Jap Bot 8: 19-46
  • Meacham CA (1981) The estimation of evolutionary history with reference to the Berberidaceae. Ph D Diss Univ Mich : 10 pl
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Copyright and Citation

Cite this publication as:

Oberschneider W. 2005. Actaea spicata. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Actaea_spicata/110862; accessed 2025-04-28

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