Asimina triloba

Taxonomy: Angiospermae, Magnoliales, Annonaceae, Asimina

Published: 2023-12-11

Pollen Description

Shape, Size and Aperture

pollen unit: tetrad, dispersal unit and peculiarities: tetrad planar, tetrad decussate, size (pollen unit): very large (>100 µm), size of hydrated pollen (LM): >100 µm, shortest polar axis in equatorial view (LM): 51-100 µm, longest polar axis in equatorial view (LM): >100 µm, shortest diameter in equatorial or polar view (LM): >100 µm, longest diameter in equatorial or polar view (LM): >100 µm, pollen class: tetrad, inaperturate, polarity: heteropolar, P/E-ratio: oblate, shape: rounded cuboid, outline in polar view: -, dominant orientation (LM): oblique, P/E-ratio (dry pollen): -, shape (dry pollen): -, outline in polar view (dry pollen): -, infoldings (dry pollen): -, aperture number: none, aperture type: no aperture, aperture condition: inaperturate, aperture peculiarities: -

Ornamentation and Structure

LM ornamentation LM: verrucate, scabrate, nexine: -, sexine: -, SEM ornamentation SEM: microreticulate, perforate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: -, supratectal element: -

Miscellaneous

pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -

Annotations: proximal germination area

Author(s) of diagnosis: Heigl, Helmut; Halbritter, Heidemarie

Pictures

1. hydrated Pollen

2. hydrated Pollen

3. hydrated Pollen

4. tetrads

5. tetrad

6. tetrad

7. tetrad

8. exine surface

9. exine surface

10. exine surface

11. exine surface

12. exine surface

13. exine surface

14. planar tetrad, dry pollen

15. descussate tetrad, dry pollen

Picture legend

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.
tetrads - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
tetrad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
tetrad - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
tetrad - 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.
exine surface - 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.
exine surface - 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.
exine surface - dry, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
planar tetrad, dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.
descussate tetrad, dry pollen - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

Hesse M, Halbritter H, Weber M (2009) Beschorneria yuccoides and Asimina triloba (L.) Dun: Examples for proximal polar germinating pollen in angiosperms. Grana 51: 148-157

Copyright and Citation

Cite this publication as:

Heigl H., Halbritter H. 2023. Asimina triloba. In: PalDat - A palynological database. https://www.paldat.org/pub/Asimina_triloba/306641; accessed 2024-11-10

PalDat - Palynological Database

an online publication on recent pollen