PalDat Logo

PalDat - Palynological Database

an online publication on recent pollen

Ceratocephala orthoceras

Taxonomy: Angiospermae, Ranunculales, Ranunculaceae, Ceratocephala

Annotations: Synonym: Ranunculus testiculatus, Ceratocephalus testiculatus

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): 26-30 µm,  shortest polar axis in equatorial view (LM): -,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): 26-30 µm,  longest diameter in equatorial or polar view (LM): 26-30 µm,  pollen class: colpate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): -,  shape (dry pollen): spheroidal,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colpus,  aperture condition: colpate, pantocolpate,  aperture peculiarities: aperture membrane ornamented, pantoaperturate

Ornamentation and Structure

LMornamentation LM: verrucate, scabrate, gemmate,  nexine: -,  sexine: -,  SEMornamentation SEM: microechinate, perforate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: number and position of apertures varies frequently

Author(s) of diagnosis: Oberschneider, Wolfgang; Auer, Waltraud

Pictures

flower(s)

1. flower(s)

upper focus

2. upper focus

optical section

3. optical section

lower focus

4. lower focus

hydrated pollen

5. hydrated pollen

hydrated pollen

6. hydrated pollen

hydrated pollen

7. hydrated pollen

equatorial view

8. equatorial view

detail of aperture

9. detail of aperture

exine surface

10. exine surface

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

pollen wall

12. pollen wall

aperture

13. aperture

generative cell (right) and vegetative nucleus

14. generative cell (right) and vegetative nucleus

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. hydrated pollen - fresh, glycerine, unstained, photographer: Auer, W.
  6. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  7. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  8. equatorial view - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  9. detail of aperture - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  10. exine surface - fresh, rehydration (water) & chloroform & critical point dried & 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 - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  13. aperture - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  14. generative cell (right) and vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Oberschneider, W.

Literature

  • Oberschneider W (1998) Pollenmorphologie der Ranunculanae. Diplomarbeit. Universität Wien : 125 pp
  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
  • 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:

Oberschneider W., Auer W. 2021. Ceratocephala orthoceras. In: PalDat - A palynological database. https://www.paldat.org/pub/Ceratocephala_orthoceras/305579;jsessionid=CBBA8A119F907DDE04C92C355A23DEA9; accessed 2024-03-28

Previous Publications