Ballota nigra
Taxonomy: Angiospermae, Lamiales, Lamiaceae, Ballota
Published: 2016-07-27
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): -, 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: colpate, 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): elliptic, infoldings (dry pollen): aperture(s) sunken, aperture number: 3, aperture type: colpus, aperture condition: tricolpate, colpate, aperture peculiarities: aperture membrane ornamented
Ornamentation and Structure
LM ornamentation LM: -, nexine: -, sexine: -, SEM ornamentation SEM: perforate, microechinate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: continuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: -, cell number: 2-celled, Ubisch bodies: absent
Author(s) of diagnosis: Weber, M.; Halbritter, Heidemarie
Pictures
1. flower(s)
2. polar view
3. equatorial view
4. polar area
5. aperture
6. exine surface
7. dry pollen grains
8. pollen wall
9. aperture
Picture legend
- flower(s), photographer: Halbritter, H.
- polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- 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 grains - dry, sputter coated with gold, photographer: Halbritter, H.
- pollen wall - fixed, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
- aperture - fixed, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
Literature
- (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. 2016. Ballota nigra. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Ballota_nigra/301273;jsessionid=6A38A3E28DA84DF6E19837DE2CA0C7F6; accessed 2025-04-29