Phleum pratense
Taxonomy: Angiospermae, Poales, Poaceae, Phleum
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): 36-40 µm, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): 36-40 µm, longest diameter in equatorial or polar view (LM): 36-40 µm, pollen class: ulcerate, polarity: heteropolar, P/E-ratio: prolate, shape: -, 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: areolate, 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
Author(s) of diagnosis: Diethart, Bernadette; Auer, Waltraud
Pictures
1. flower(s)
2. flower(s)
3. pollen grain with two sperm cells
4. upper focus
5. optical section
6. lower focus
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. dry pollen grain
16. anther wall with Ubisch bodies
17. anther wall with Ubisch bodies
18. pollen grain in cross section
19. interapertural area of pollen wall
20. apertural area of pollen wall
21. vegetative nucleus (right) and sperm cell (left)
Picture legend
- flower(s), photographer: Diethart, B.
- flower(s), photographer: Diethart, B.
- pollen grain with two sperm cells - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
- upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
- optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
- lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
- 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: Diethart, B.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
- dry pollen grain - dry, sputter coated with gold, photographer: Diethart, B.
- anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
- anther wall with Ubisch bodies - fresh, formalin-acetic-alcohol & critical point dried & rehydrated (water), photographer: Diethart, B.
- pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
- vegetative nucleus (right) and sperm cell (left) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.
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:
Diethart B., Auer W. 2021. Phleum pratense. In: PalDat - A palynological database. https://www.paldat.org/pub/Phleum_pratense/304807;jsessionid=88DB2AFC8D63E32057930AD552EDBAE0; accessed 2024-04-18