Carex distans
Taxonomy: Spermatophyta, Juncales, Cyperaceae, Carex
Published: 2005-06-01
Pollen Description
Shape, Size and Aperture
pollen unit: tetrad, dispersal unit and peculiarities: tetrad, 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: -, polarity: heteropolar, P/E-ratio: prolate, shape: -, 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: -, aperture peculiarities: aperture membrane ornamented, pantoaperturate
Ornamentation and Structure
LM ornamentation LM: -, nexine: -, sexine: -, SEM ornamentation SEM: perforate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: discontinuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: starch, cell number: 2-celled, Ubisch bodies: absent
Annotations: Pollen grains are pseudomonads; they include remnants of the 3 aborted pollen grains (sharp edge). Number of apertures mostly 5 but also 6. Intine in interaperturate zone is thicker than in aperturate zone.
Author(s) of diagnosis: Loos, C.; Halbritter, H.
Pictures
1. flower(s)
2. acetolyzed tetrad, equatorial view
3. pollen grain with vegetative nucleus and generative cell
4. hydrated tetrads
5. hydrated tetrad, equatorial view
6. aperture
7. exine surface
8. dry tetrads
9. pollen grain in cross section
10. apertural area of pollen wall
11. interapertural area of pollen wall
12. pollen wall at transition of aperture and interapertural area
13. vegetative nucleus
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
Copyright and Citation
Cite this publication as:
Loos C., Halbritter H. 2005. Carex distans. In: PalDat - A palynological database. https://www.paldat.org/pub/Carex_distans/101131;jsessionid=B7DE6EF423DD8475AC539E6B1D929879; accessed 2024-04-26