Comastoma tenellum
Taxonomy: Angiospermae, Gentianales, Gentianaceae, Comastoma
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Comastoma-tenellum.htm
Published: 2020-11-18
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: -
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: perforate, microreticulate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: absent
Author(s) of diagnosis: Halbritter, Heidemarie; Auer, Waltraud
Pictures
1. inflorescence(s)
2. flower(s)
3. hydrated Pollen
4. hydrated Pollen
5. hydrated Pollen
6. hydrated pollen
7. polar view
8. equatorial view
9. equatorial view
10. oblique view
11. oblique view, tetracolporate (exception)
12. aperture
13. exine surface
14. polar area
15. dry pollen
Picture legend
- inflorescence(s), photographer: Berger, A.
- flower(s), photographer: Berger, A.
- hydrated Pollen - fresh, glycerine, unstained, photographer: Auer, W.
- hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
- hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
- hydrated pollen - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- oblique view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- oblique view, tetracolporate (exception) - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar area - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen - 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., Auer W., Berger A. 2020. Comastoma tenellum. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Comastoma_tenellum/305754;jsessionid=4973890A1584824A2EDB1C1450C995C2; accessed 2025-01-10