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PalDat - Palynological Database

an online publication on recent pollen

Thalictrum flavum

Taxonomy: Angiospermae, Ranunculales, Ranunculaceae, Thalictrum

Published: 2016-10-21

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): -,  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: -,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: >6,  aperture type: porus,  aperture condition: porate, pantoporate,  aperture peculiarities: aperture membrane ornamented, pantoaperturate

Ornamentation and Structure

LM  ornamentation LM: echinate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: microechinate, perforate,  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: starch, lipids,  cell number: 2-celled,  Ubisch bodies: present

Annotations: number and shape of apertures variable

Author(s) of diagnosis: Auer, Angelika

Pictures

flower(s)

1. flower(s)

upper focus

2. upper focus

optical section

3. optical section

lower focus

4. lower focus

generative cell (asterisk) and vegetative nucleus

5. generative cell (asterisk) and vegetative nucleus

polar view

6. polar view

equatorial view

7. equatorial view

exine surface

8. exine surface

detail of colpus membrane

9. detail of colpus membrane

polar view (dry pollen grain)

10. polar view (dry pollen grain)

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

interapertural area of pollen wall, intine (I), endexine (E)

12. interapertural area of pollen wall, intine (I), endexine (E)

apertural area of pollen wall, intine (I), endexine (E)

13. apertural area of pollen wall, intine (I), endexine (E)

pollen wall (bottom) and tapetum cells with Ubisch bodies (U)

14. pollen wall (bottom) and tapetum cells with Ubisch bodies (U)

Picture legend

  1. flower(s), photographer: Auer, A.
  2. upper focus - fresh, acetolyzed, unstained, photographer: Auer, A.
  3. optical section - fresh, acetolyzed, unstained, photographer: Auer, A.
  4. lower focus - fresh, acetolyzed, unstained, photographer: Auer, A.
  5. generative cell (asterisk) and vegetative nucleus - fixed, formalin-acetic-alcohol, aceto-carmine, photographer: Auer, A.
  6. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Auer, A.
  7. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Auer, A.
  8. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Auer, A.
  9. detail of colpus membrane - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Auer, A.
  10. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Auer, A.
  11. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Auer, A.
  12. interapertural area of pollen wall, intine (I), endexine (E) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Auer, A.
  13. apertural area of pollen wall, intine (I), endexine (E) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Auer, A.
  14. pollen wall (bottom) and tapetum cells with Ubisch bodies (U) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Auer, A.

Literature

  • Daumann E (1969) Zur Blütenmorphologie und Bestäubungsökologie einiger Ranunculaceen (Cimicifuga L., Actaea L., Thalictrum L.). Preslia 41: 213-219
  • Kaplan SM, Mulcahy DL (1971) Mode of pollination and floral sexuality in Thalictrum. Evolution 25: 659-668
  • 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:

Auer A. 2016. Thalictrum flavum. In: PalDat - A palynological database. https://www.paldat.org/pub/Thalictrum_flavum/301681;jsessionid=339F389B3D3D45511F694E02DB4ACF5A; accessed 2024-04-20

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