Eustoma grandiflorum
Taxonomy: Angiospermae, Gentianales, Gentianaceae, Eustoma
Links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:367445-1
Annotations: Synonym of Eustoma russellianum
Published: 2026-09-10
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): 31-35 µm, longest polar axis in equatorial view (LM): 31-35 µm, shortest diameter in equatorial or polar view (LM): 31-35 µm, longest diameter in equatorial or polar view (LM): 36-40 µm, pollen class: colporate, polarity: isopolar, P/E-ratio: oblate, 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): lobate, infoldings (dry pollen): aperture(s) sunken, aperture number: 3, aperture type: colporus, aperture condition: tricolporate, colporate, aperture peculiarities: margo
Ornamentation and Structure
LM ornamentation LM: reticulate, striato-reticulate, nexine: -, sexine: -, SEM ornamentation SEM: free-standing columellae, striato-reticulate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: pollenkitt, reserves in cytoplasm: -, cell number: -, Ubisch bodies: absent
Author(s) of diagnosis: Halbritter, Heidemarie; Koelzer, Karen
Pictures
1. flower(s)
2. hydrated pollen, polar view
3. hydrated pollen, polar view
4. hydrated pollen, polar view
5. hydrated pollen, equatorial view
6. hydrated pollen, equatorial view
7. hydrated pollen, equatorial view
8. hydrated pollen, oblique view
9. hydrated pollen, equatorial view, pollenkitt
10. hydrated pollen, equatorial view
11. hydrated pollen, equatorial view
12. hydrated pollen, oblique view
13. hydrated pollen, oblique view, pollenkitt
14. oblique polar view
15. equatorial view
16. aperture
17. aperture detail
18. aperture detail
19. exine surface
20. polar area
21. dry pollen
Picture legend
- flower(s), photographer: Halbritter, H.
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, polar view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, oblique view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view, pollenkitt - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, unstained, photographer: Koelzer, K.
- hydrated pollen, equatorial view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, oblique view - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- hydrated pollen, oblique view, pollenkitt - fresh, glycerine-gelatine, fuchsin, photographer: Koelzer, K.
- oblique polar view - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial 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.
- aperture detail - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- aperture detail - 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.
- 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., Koelzer K. 2026. Eustoma grandiflorum. In: PalDat - A palynological database. /pub/Eustoma_grandiflorum/307068; accessed 2026-09-11