Astropanax abyssinicus

Taxonomy: Angiospermae, Apiales, Araliaceae, Aralioideae, Astropanax

Links: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:89896-1

Published: 2025-11-06

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, shortest polar axis in equatorial view (LM): 21-25 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: isodiametric, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): oblique, P/E-ratio (dry pollen): isodiametric, shape (dry pollen): spheroidal, outline in polar view (dry pollen): circular, infoldings (dry pollen): not infolded, aperture number: 3, aperture type: colporus, aperture condition: colporate, aperture peculiarities: -

Ornamentation and Structure

LM ornamentation LM: reticulate, nexine: present, sexine: present, SEM ornamentation SEM: microreticulate, 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: -

Author(s) of diagnosis: Sedlačko, Adam; Jacobs, Bonnie F; Grímsson, Friðgeir

Pictures

1. Equatorial view

2. Polar view

3. Equatorial view showing one aperture

4. Equatorial view showing two apertures

5. Equatorial view showing two apertures

6. Oblique polar view

7. Oblique polar view

8. Sculpture along colpi, microreticulate

9. Sculpture in interapertural area, reticulate

10. Sculpture in polar area, reticulate

Picture legend

Equatorial view - dry, acetolyzed & glycerine, unstained, photographer: Sedlačko, A.
Polar view - dry, acetolyzed & glycerine, unstained, photographer: Sedlačko, A.
Equatorial view showing one aperture - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Equatorial view showing two apertures - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Equatorial view showing two apertures - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Oblique polar view - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Oblique polar view - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Sculpture along colpi, microreticulate - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Sculpture in interapertural area, reticulate - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.
Sculpture in polar area, reticulate - dry, acetolyzed & sputter coated with gold, photographer: Sedlačko, A.

Literature

Halbritter H, Ulrich S, Grímsson F, Weber M, Zetter R, Hesse M, Buchner R, Svojtka M, Frosch-Radivo A (2018) Illustrated Pollen Terminology 2nd Edition
Pan AD, Jacobs BF, Currano ED, Gostel MR, Lowry PP, Plunkett GM, Hoffmann J, Geier V, Grímsson F (2025) Fossil Astropanax Seem. (Araliaceae) from the early Miocene (21.73 Mya) Mush Valley plant assemblages of Ethiopia Botanical Journal of the Linnean Society 209: 280-302

Copyright and Citation

Cite this publication as:

Sedlačko A., Jacobs B., Grímsson F. 2025. Astropanax abyssinicus . In: PalDat - A palynological database. https://www.paldat.org/pub/Astropanax_abyssinicus_/306756;jsessionid=05DD0DB6BDDF78838A69E6C8D6D02A80; accessed 2025-11-07

PalDat - Palynological Database

an online publication on recent pollen