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PalDat - Palynological Database

an online publication on recent pollen

Bryonia dioica

Taxonomy: Angiospermae, Cucurbitales, Cucurbitaceae, Bryonia

Links: http://flora.nhm-wien.ac.at/seiten-arten/bryonia-dioica.htm

Published: 2021-01-05

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): 41-50 µm,  shortest polar axis in equatorial view (LM): 41-50 µm,  longest polar axis in equatorial view (LM): 41-50 µm,  shortest diameter in equatorial or polar view (LM): 41-50 µm,  longest diameter in equatorial or polar view (LM): 41-50 µm,  pollen class: colporate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): oblique,  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: aperture membrane psilate, margo

Ornamentation and Structure

LMornamentation LM: reticulate,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate,  suprasculpture SEM: -,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Author(s) of diagnosis: Weber, Martina; Halbritter, Heidemarie; Heigl, Helmut

Pictures

flower(s)

1. flower(s)

hydrated pollen

2. hydrated pollen

hydrated pollen

3. hydrated pollen

hydrated pollen

4. hydrated pollen

equatorial (left) and polar (right) view

5. equatorial (left) and polar (right) view

detail of aperture

6. detail of aperture

exine surface

7. exine surface

dry pollen grain in equatorial view

8. dry pollen grain in equatorial view

vegetative nucleus (asterisk) and generative cell; note starch grains within vegetative cytoplasm

9. vegetative nucleus (asterisk) and generative cell; note starch grains within vegetative cytoplasm

pollen wall with pollenkitt inside the exine cavities

10. pollen wall with pollenkitt inside the exine cavities

Picture legend

  1. flower(s), photographer: Schneider, H.
  2. hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  3. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  4. hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  5. equatorial (left) and polar (right) view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  6. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  7. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  8. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Halbritter, H.
  9. vegetative nucleus (asterisk) and generative cell; note starch grains within vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.
  10. pollen wall with pollenkitt inside the exine cavities - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.

Literature

  • Kugler H (1981) Zur Bestäubung von Bryonia dioica Jacq. Ber Deutsch Bot Ges 94: 287-290
  • 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:

Weber M., Halbritter H., Heigl H., Schneider H. 2021. Bryonia dioica. In: PalDat - A palynological database. https://www.paldat.org/pub/Bryonia_dioica/304874;jsessionid=0AFDFE848E4F39976D59D70EFF655E8B; accessed 2021-03-08

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