Ornithogalum umbellatum
Taxonomy: Angiospermae, Asparagales, Asparagaceae, Ornithogalum
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Ornithogalum-umbellatum.htm
Published: 2020-12-29
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): 31-35 µm, longest polar axis in equatorial view (LM): 36-40 µm, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: sulcate, polarity: heteropolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): equatorial, P/E-ratio (dry pollen): -, shape (dry pollen): boat-shaped, outline in polar view (dry pollen): elliptic, infoldings (dry pollen): aperture(s) sunken, aperture number: 1, aperture type: sulcus, aperture condition: sulcate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: foveolate, perforate, suprasculpture SEM: -, TEM tectum: semitectate, infratectum: columellate, foot layer: discontinuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: lipids, cell number: 2-celled, Ubisch bodies: absent
Author(s) of diagnosis: Aktuna, Gabriela; Heigl, Helmut
Pictures
1. flower(s)
2. pollen grain after acetolysis
3. hydrated pollen
4. hydrated pollen
5. hydrated pollen
6. polar view (proximal)
7. detail of sulcus
8. exine surface
9. dry pollen grain in polar view (distal)
10. dry pollen grain in polar view (proximal)
11. pollen grain in cross section
12. interapertural area of pollen wall
13. pollen wall at transition of aperture and interapertural area
14. apertural area of pollen wall
15. generative cell
Picture legend
- flower(s), photographer: Aktuna, G.
- pollen grain after acetolysis - fresh, acetolyzed, unstained, photographer: Aktuna, G.
- hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- polar view (proximal) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Aktuna, G.
- detail of sulcus - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Aktuna, G.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Aktuna, G.
- dry pollen grain in polar view (distal) - dry, sputter coated with gold, photographer: Aktuna, G.
- dry pollen grain in polar view (proximal) - dry, sputter coated with gold, photographer: Aktuna, G.
- pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Aktuna, G.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Aktuna, G.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Aktuna, G.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Aktuna, G.
- generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Aktuna, G.
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:
Aktuna G., Heigl H. 2020. Ornithogalum umbellatum. In: PalDat - A palynological database. https://www.paldat.org/pub/Ornithogalum_umbellatum/304754;jsessionid=F8B806DC3450BAF9F9FD18F047DB1FEE; accessed 2024-04-18