Histo-anatomical and histogenetic aspects in the stem and root of Chelidonium majus L.

The present study focuses on aspects of anatomy and histogenesis in the root and stem of common celandine (Chelidonium majus L.). The stem is annual, having a primary structure. It is to be noticed the depositing parenchyma within the medullar rays and around the vascular bundles. The secretory tissue from the near vicinity of the primary phloem gets together with this in the composition of the collateral vascular bundles. The chlorenchyma initially present in the structure of the common celandine stem shall be subsequently replaced by depositing and mechanic tissues. The primary perennial root has a diarch secondary structure. This structure is due to the functioning of the cambium and the phellogen along several years. The secondary phloem is a deposit for the amyloplasts, there being present here several laticifers. The ritidoma is well represented, black in colour, also rich in laticifers. The secondary roots have a medullar origin and disticha distribution.