Pollenatlas

Dieser POLLENATLAS enthält derzeit bereits über 90 verschiedene Pollentafeln mit Bildern und Beschreibungen der Pollen, die öfters in Luftproben anzutreffen sind.

Autorenschaft: Der Pollenatlas wurde von Edith Bucher und Veronika Kofler (Biologisches Labor der Landesagentur für Umwelt, Bozen) erstellt, ausgearbeitet und zur Verfügung gestellt.

  • Galium anisophyllon

    pollen in optical section (1)
    pollen in optical section (1)
    exine sculpture and apertures (1)
    exine sculpture and apertures (1)
    pollen in optical section (2)
    pollen in optical section (2)
    exine sculpture and apertures (2)
    exine sculpture and apertures (2)

    species: Galium anisophyllon (Bedstraw)
    plant family: Rubiaceae
    at aerobiological analyses usually achieved determination level: Rubiaceae

    photos: Landesagentur für Umwelt, Bozen (Italy)

    description:
    outline: more or less circular in polar view, circulate-ovate in equatorial view
    size: polar axis: 15.3 (15-16) µm, equatorial axis 17.9 (16-19) µm
    apertures: zonocolpate pollen with mostly 8- more seldom 7 or 9 – narrow, acute colpi. Membrane of the colpi covered by exine remnants.
    pollen wall: exine up to 1 µm thick, microreticulate. Reticulum scarcely visible, even under 1000x magnification. Intine about 0.5µm thick.
    additional remarks: very similar pollen are found in further representatives of the Rubiaceae family (Rubia, Asperula, Cruciata, Sherardia)

    remarks to the plant:
    A central- and southern European weed of the mountain ranges. It prefers calcareous soils in grassy and bare places. Leaves are ovate to lanceolate, arranged in whorls of 5-8. The small, yellowish-white flowers stand in a conical inflorescence. Flowers from June to September.

  • Ginkgo biloba

    pollen in optical section (1)
    pollen in optical section (1)
    exine sculpture (1)
    exine sculpture (1)
    pollen in optical section (2)
    pollen in optical section (2)
    pollen in optical section (3)
    pollen in optical section (3)

    species: Gingko biloba
    plant family: Ginkgoaceae
    at aerobiological analyses usually achieved determination level: Ginkgo biloba

    photos: Landesagentur für Umwelt, Bozen (Italy)

    description:
    outline:
    circular to elliptical
    size: polar axis: 28.7 (26.7-32.1) µm, equatorial axis: 26.1 (24.7-27.7) µm
    apertures: monocolpate with long, wide germination fissure (sulcus)
    pollen wall: thin, scabrate exine, thin intine which extends beyond the colpus.
    note: Sometimes opposite the colpus the pollen grain shows wrinkles. The pollen wall encloses a motile, free swimming sperm.

    remarks to the plant:
    Gingko, a dioecious gymnosperm, is the sole living link between the lower and higher plants, between ferns and conifers. Native from China and Japan, it is an often planted ornamental tree. Very characteristic are the fan shaped and bilobed leaves. Flowers appear in April. Male flowers are arranged in cylindirical yellow-green catkins, the females are long-stalked and stand in groups of 2-3. Some months ly between pollination and insemination.

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