Echium italicum
Taxonomy: Angiospermae, unplaced, Boraginaceae, Echium
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Echium-italicum.htm
Published: 2020-12-09
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): small (10-25 µm), size of hydrated pollen (LM): 11-15 µm, shortest polar axis in equatorial view (LM): 11-15 µm, longest polar axis in equatorial view (LM): 11-15 µm, shortest diameter in equatorial or polar view (LM): 11-15 µm, longest diameter in equatorial or polar view (LM): 11-15 µm, pollen class: colporate, polarity: heteropolar, P/E-ratio: prolate, shape: -, outline in polar view: circular, dominant orientation (LM): equatorial, P/E-ratio (dry pollen): prolate, shape (dry pollen): -, outline in polar view (dry pollen): circular, infoldings (dry pollen): aperture(s) sunken, aperture number: 3, aperture type: colporus, aperture condition: colporate, tricolporate, aperture peculiarities: aperture membrane ornamented
Ornamentation and Structure
LM ornamentation LM: reticulate, nexine: -, sexine: -, SEM ornamentation SEM: granulate, perforate, microreticulate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -
Annotations: pollen pear shaped (in hydrated and dry contition); aperture number varies from 3 to 4 colpori; ornamentation perforate (polar area) to microreticulate (equator)
Author(s) of diagnosis: Halbritter, Heidemarie; Heigl, Helmut
Pictures
1. habitus
2. inflorescence(s)
3. hydrated pollen
4. hydrated pollen
5. hydrated pollen
6. hydrated pollen
7. polar view
8. equatorial view, tetracolporate pollen grain
9. oblique view
10. aperture
11. exine surface
12. polar area
13. polar area
14. dry pollen
Picture legend
- habitus, photographer: Weis, B.
- inflorescence(s), photographer: Weis, B.
- 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.
- hydrated pollen - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view, tetracolporate pollen grain - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- oblique view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- aperture - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar area - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- polar area - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
Literature
- (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:
Halbritter H., Heigl H., Weis B. 2020. Echium italicum. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Echium_italicum/304394;jsessionid=E61FB383DAA4482FD4B264DCAD375C15; accessed 2025-01-25