Thesium ramosum
Taxonomy: Angiospermae, Santanales, Santalaceae, Thesium
Annotations: according to "The Plant List" synonym of thesium arvense
Published: 2016-03-11
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: heteropolar, P/E-ratio: -, shape: no suitable term, outline in polar view: triangular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): no suitable term, outline in polar view (dry pollen): triangular, infoldings (dry pollen): interapertural area sunken, aperture number: 3, aperture type: colpus, aperture condition: tricolpate, colpate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: -, nexine: -, sexine: -, SEM ornamentation SEM: psilate, reticulate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: absent
Annotations: colpus with 2 short arms situated on one side (most probably distally); "triadiate colpus"
Author(s) of diagnosis: Halbritter, Heidemarie
Pictures
1. aspect
2. flower(s)
3. hydrated pollen grains
4. polar (? proximal) view
5. polar (? distal) view
6. equatorial view
7. oblique view
8. aperture
9. exine surface
10. dry pollen grains
Picture legend
- aspect, photographer: Svojtka, M.
- flower(s), photographer: Svojtka, M.
- hydrated pollen grains - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar (? proximal) view - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar (? distal) view - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- oblique view - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- aperture - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - fresh, rehydration (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
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:
Halbritter H., Svojtka M. 2016. Thesium ramosum. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Thesium_ramosum/300625;jsessionid=D64471E15591B8B55EC1BDE944599F66; accessed 2025-01-10