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: tricolporate, colporate, aperture peculiarities: margo, aperture membrane psilate
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: reticulate, suprasculpture SEM: -, TEM tectum: 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
1. flower(s)
2. hydrated pollen
3. hydrated pollen
4. hydrated pollen
5. equatorial (left) and polar (right) view
6. detail of aperture
7. exine surface
8. dry pollen grain in equatorial view
9. vegetative nucleus (asterisk) and generative cell; note starch grains within vegetative cytoplasm
10. pollen wall with pollenkitt inside the exine cavities
Picture legend
- flower(s), photographer: Schneider, H.
- hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- equatorial (left) and polar (right) view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Halbritter, H.
- vegetative nucleus (asterisk) and generative cell; note starch grains within vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.
- pollen wall with pollenkitt inside the exine cavities - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Weber, M.
Literature
- (1981) Zur Bestäubung von Bryonia dioica Jacq. Ber Deutsch Bot Ges 94: 287-290
- (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://pc8.botanik.univie.ac.at/pub/Bryonia_dioica/304874; accessed 2025-04-28