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    ARTICLE

    Pollen morphology of Senecio bergii (Asteraceae), with special attention to the mesoaperture

    Montes B1,2, MG Murray1,3

    Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 201-208, 2015, DOI:10.32604/phyton.2015.84.201

    Abstract Palynological studies contribute to understanding the taxonomy, phylogeny and ecology of the Asteraceae and other families. In this study, pollen morphology and ultrastructure of the exine of Senecio bergii Hieron. were studied using light, scanning and transmission electron microscopy. The pollen of this species is prolate-spheroidal, it has a Senecioid pattern on the exine and an apertural system composed of three apertures (ecto-, meso- and endoapertures). This pollen type is defined as tricolpororate due to the triple apertural system. This is the first description of the ultrastructure of the apertural system of the pollen of Argentine species More >

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