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Celtis australis
pollen in optical section (3)
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species: Celtis australis (Nettle Tree, Hackberry)
plant family: Ulmaceae
at aerobiological analyses usually achieved determination level: Celtis, Ulmaceae
photos:
© Biologisches Labor, Umweltagentur Bozen (Italy)
description:
outline: irregular circular to elliptical
size: polar axis: 30.8 (27-35) µm, very changeable
apertures: tri- to penta-zonoporate, pori about 2-3 µm wide, with dots of remnants from the exine.
pollen wall: thin, scabrate exine, thin intine, thickened to onci underneath the pori.
note: granular cytoplasm, containing numerous leucoplasts sized about 1-2 µm.
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| pollen in optical section (1) |
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| pollen in optical section (2) |
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| pollen in optical section (3) |
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| exine sculpture and apertures (3) |
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