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an online publication on recent pollen

Hypericum perforatum

Taxonomy: Angiospermae, Malpighiales, Hypericaceae, Hypericum

Published: 2016-08-11

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: colporate,  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: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

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

Miscellaneous

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

Author(s) of diagnosis: Bombosi, Paula

Pictures

flower(s)

1. flower(s)

polar view,upper focus

2. polar view, upper focus

optical section

3. optical section

polar view,lower focus

4. polar view, lower focus

pollen grain with generative cell (arrow)

5. pollen grain with generative cell (arrow)

polar view

6. polar view

equatorial view

7. equatorial view

detail of aperture

8. detail of aperture

exine surface

9. exine surface

polar view (dry pollen grain)

10. polar view (dry pollen grain)

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

pollen grain in cross section with generative cell (arrow)

12. pollen grain in cross section with generative cell (arrow)

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

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

apertural area of pollen wall, intine (I)

14. apertural area of pollen wall, intine (I)

apertural area of pollen wall, intine (I)

15. apertural area of pollen wall, intine (I)

tapetum cells with Ubisch bodies (U)

16. tapetum cells with Ubisch bodies (U)

Picture legend

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

Literature

  • 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:

Bombosi P. 2016. Hypericum perforatum. In: PalDat - A palynological database. https://www.paldat.org/pub/Hypericum_perforatum/301318;jsessionid=0FAC703EC1EC038142B290AC70F91617; accessed 2024-03-28

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