Symphytum officinale
Taxonomy: Angiospermae, unplaced, Boraginaceae, Symphytum
Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Symphytum-officinale.htm, https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:120815-1
Annotations: Symphytum officinale L.
Published: 2026-09-30
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): 21-25 µm, 16-20 µm, shortest polar axis in equatorial view (LM): 16-20 µm, longest polar axis in equatorial view (LM): 21-25 µm, shortest diameter in equatorial or polar view (LM): 16-20 µm, longest diameter in equatorial or polar view (LM): 21-25 µm, pollen class: colporate, polarity: isopolar, 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: >6, aperture type: colporus, aperture condition: stephanocolporate, colporate, aperture peculiarities: stephanoaperturate
Ornamentation and Structure
LM ornamentation LM: psilate, nexine: -, sexine: -, SEM ornamentation SEM: granulate, psilate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: 3-celled, Ubisch bodies: present
Author(s) of diagnosis: Bombosi, P.; Halbritter, Heidemarie; Heigl, Helmut; Koelzer, Karen
Pictures
1. flower(s)
2. hydrated pollen
3. hydrated pollen
4. hydrated pollen
5. acetolyzed pollen, equatorial view
6. acetolyzed pollen, polar view
7. acetolyzed pollen
8. acetolyzed pollen
9. acetolyzed pollen
10. polar view
11. equatorial view
12. detail of aperture
13. exine surface
14. dry pollen grains
Picture legend
- flower(s), photographer: Bombosi, P.
- 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.
- acetolyzed pollen, equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Koelzer, K.
- acetolyzed pollen, polar view - dry, acetolyzed & glycerine, unstained, photographer: Koelzer, K.
- acetolyzed pollen - dry, acetolyzed & glycerine, unstained, photographer: Koelzer, K.
- acetolyzed pollen - dry, acetolyzed & glycerine, unstained, photographer: Koelzer, K.
- acetolyzed pollen - dry, acetolyzed & glycerine, unstained, photographer: Koelzer, K.
- polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
- detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
- dry pollen grains - dry, sputter coated with gold, photographer: Bombosi, P.
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:
Bombosi P., Halbritter H., Heigl H., Koelzer K. 2026. Symphytum officinale. In: PalDat - A palynological database. /pub/Symphytum_officinale/307085; accessed 2026-10-01