Carex distans
Taxonomy: Angiospermae, Poales, Cyperaceae, Carex
Published: 2016-11-28
Pollen Description
Shape, Size and Aperture
pollen unit: tetrad, dispersal unit and peculiarities: pseudomonad, 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: tetrad, polarity: heteropolar, P/E-ratio: -, shape: no suitable term, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): aperture(s) sunken, aperture number: 5, aperture type: poroid, aperture condition: poroidate, aperture peculiarities: aperture membrane ornamented
Ornamentation and Structure
LM ornamentation LM: scabrate, nexine: -, sexine: -, SEM ornamentation SEM: microechinate, perforate, fossulate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: discontinuous, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: starch, cell number: 2-celled, Ubisch bodies: absent
Annotations: pseudomonads (including remnants of 3 aborted pollen grains); number of apertures mostly 5 but also 6; intine in interaperturate area thicker than in aperture
Author(s) of diagnosis: Loos, Claudia; Halbritter, Halbritter
Pictures
Picture legend
- flower(s), photographer: Loos, C.
- acetolyzed tetrad, equatorial view - fresh, acetolyzed, unstained, photographer: Loos, C.
- pollen grain with vegetative nucleus and generative cell - fixed, glutaraldehyde, aceto-carmine, photographer: Loos, C.
- hydrated tetrads - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- hydrated tetrad, 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.
- dry tetrads - dry, sputter coated with gold, photographer: Halbritter, H.
- pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Loos, C.
- vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Loos, C.
Literature
- (1994) Exkursionsflora von Österreich : 1180
- (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:
Loos C., Halbritter H. 2016. Carex distans. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Carex_distans/302453;jsessionid=1474CE80BDDAB6001C68D835FC2746E1; accessed 2025-01-10