Alopecurus pratensis
Taxonomy: Angiospermae, Poales, Poaceae, Alopecurus
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Alopecurus-pratensis.htm
Published: 2021-01-04
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): 31-35 µm, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): 31-35 µm, longest diameter in equatorial or polar view (LM): 31-35 µm, pollen class: ulcerate, polarity: heteropolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): oblique, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): irregularly infolded, aperture number: 1, aperture type: ulcus, aperture condition: ulcerate, aperture peculiarities: annulus, operculum
Ornamentation and Structure
LM ornamentation LM: psilate, nexine: -, sexine: -, SEM ornamentation SEM: microechinate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: continuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: starch, polysaccharide vesicles, cell number: 3-celled, Ubisch bodies: present
Annotations: tectum, infratectum and footlayer with channels
Author(s) of diagnosis: Sam, Saskia; Auer, Waltraud
Pictures
1. habitus of Alopecurus pratensis
2. inflorescence of Alopecurus pratensis
3. upper focus
4. optical section
5. lower focus
6. vegetative nucleus and two sperm cells
7. hydrated pollen
8. hydrated pollen
9. hydrated pollen
10. polar view
11. equatorial view
12. aperture
13. exine surface
14. dry pollen grains
15. slightly oblique polar view of dry pollen grain
16. dry pollen grain in equatorial view
17. anther wall with Ubisch bodies
18. interapertural area of pollen wall
19. pollen wall at transition of aperture and interapertural area
20. vegetative nucleus
Picture legend
- habitus of Alopecurus pratensis, photographer: Sam, S.
- inflorescence of Alopecurus pratensis, photographer: Sam, S.
- upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
- lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- vegetative nucleus and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Sam, S.
- 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, DMP & critical point dried, photographer: Sam, S.
- equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
- aperture - fresh, DMP & critical point dried, photographer: Sam, S.
- exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
- dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
- slightly oblique polar view of dry pollen grain - dry, sputter coated with gold, photographer: Sam, S.
- dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Sam, S.
- anther wall with Ubisch bodies - fresh, DMP & critical point dried, photographer: Sam, S.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Sam, S.
- vegetative nucleus - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
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:
Sam S., Auer W. 2021. Alopecurus pratensis. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Alopecurus_pratensis/304806;jsessionid=B498273E372BF52B6F165E4FB826B51A; accessed 2025-01-10