ANATOMICAL ASPECTS OF THE STEM AND LEAF OF SENECIO GRANDIDENTATUS LEDEB. (ASTERACEAE)
The paper presents anatomical aspects of the stem and leaf of an endengered plant,Â growing on sandy coastal beaches and loessoid sea-cliffs Senecio grandidentatus Ledeb. It wasÂ observed that the root has a secondary structure, due to the phelogen and cambium activity, TheÂ stem has a one-layered epidermis, covered by cuticle, a differentiated cortex and a large numberÂ of collateral vascular bundles, most of them with xylem secondary structure due to the cambiumÂ activity. The leaf has a homogenous mesophyll and is amphistomatic. Long and densly nonÂ glandular hairs are present in the stem and leaf. The mechanical tissue is represented byÂ sclerenchymatous fibers and tangential collenchyma in the in the stem and collenchyma tissue inÂ the leaf.
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