Galium rotundifolium
Taxonomy: Angiospermae, Gentianales, Rubiaceae, Galium
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Galium-rotundifolium.htm
Published: 2020-12-15
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): small (10-25 µm), size of hydrated pollen (LM): 16-20 µm, shortest polar axis in equatorial view (LM): 16-20 µm, longest polar axis in equatorial view (LM): 16-20 µm, shortest diameter in equatorial or polar view (LM): 16-20 µm, longest diameter in equatorial or polar view (LM): 16-20 µm, pollen class: colpate, polarity: isopolar, P/E-ratio: oblate, shape: -, 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: 6, aperture type: colpus, aperture condition: colpate, stephanocolpate, aperture peculiarities: aperture membrane ornamented, stephanoaperturate
Ornamentation and Structure
LM ornamentation LM: scabrate, gemmate, verrucate, nexine: -, sexine: -, SEM ornamentation SEM: microechinate, perforate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -
Annotations: Aperture number is mostly 6, but also 5 or 7
Author(s) of diagnosis: Halbritter, Heidemarie; Auer, Waltraud
Pictures
1. flower(s)
2. hydrated pollen
3. hydrated pollen
4. hydrated pollen
5. polar view
6. equatorial view
7. aperture
8. exine surface
9. polar area
10. dry pollen grains
Picture legend
- flower(s), photographer: Halbritter, H.
- 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.
- 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.
- 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.
- polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
Literature
- (1975) Morphologie, Biologie und Abgrenzung von Galium L. sect. Aparinoides (Jord.) Gren. (Rubiaceae). Beitr Biol Pflanzen 51: 17-40
- (1988) Formation of sperm cells in Galium mollugo (Rubiaceae), Trichodiadema setuliferum (Aizoaceae), and Avena sativa L. (Poaceae). Pl Syst Evol 161: 53-64
- (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. 2020. Galium rotundifolium. In: PalDat - A palynological database. https://www.paldat.org/pub/Galium_rotundifolium/304359; accessed 2024-11-01