Cryptomeria japonica
Taxonomy: Gymnospermae, Pinales, Cupressaceae, Cryptomeria
Published: 2017-01-04
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): -, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: -, polarity: heteropolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): irregularly infolded, aperture number: 1, aperture type: leptoma, aperture condition: -, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: -, nexine: -, sexine: -, SEM ornamentation SEM: granulate, microgemmate, suprasculpture SEM: -, TEM tectum: -, infratectum: -, foot layer: -, endexine: -, intine: -, wall peculiarities: papilla, supratectal element: -
Miscellaneous
pollen coatings: -, reserves in cytoplasm: -, cell number: -, Ubisch bodies: -
Annotations: exine ruptures near papilla when hydrated (before germination); protoplast with inner sporoderm layer becomes totally separated
Author(s) of diagnosis: Halbritter, Heidemarie
Pictures
1. shoot with cone(s)
2. polar view (distal)
3. equatorial view
4. leptoma with papilla
5. papilla
6. exine surface
7. "empty exine" of a dehisced pollen grain
8. dry pollen grains
Picture legend
- shoot with cone(s), photographer: Halbritter, H.
- polar view (distal) - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- leptoma with papilla - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- papilla - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- "empty exine" of a dehisced pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
- dry pollen grains - 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. 2017. Cryptomeria japonica. In: PalDat - A palynological database. https://www.paldat.org/pub/Cryptomeria_japonica/302909;jsessionid=D46B7CAEFB45100FE7C131FA4727A7F3; accessed 2025-07-13