indivara indivara :

Morphology:

Rhizome-clothed with leaf sheath, spongy roots, light in weight, size variable, dark greenish pink in colour; no odour; taste, salty

Histology:

Rhizome – Epidermis single layered; a cortical region distinct from the stelar region present; cortical region prominently aerenchymatous with large air chambers due to parenchymatous trabeculae; several small patches of tissues present among the trabeculae, some of which are of undifferentiated parenchyma while some show a strand or two of xylem and phloem; several of the air chambers show partition by a thin diaphragm of one or two layers of thin walled cells with minute intercellular spaces and cross- wall perforations; occasionally, a cortical bundle with well developed vascular tissues within a distinct endodermis and air chambers seen, beneath which a thick walled parenchymatous sheath of 6 or 7 layers of cells enclosing the xylem, phloem and parenchyma is present; cortical region also shows raphides, starch grains and amber coloured amorphous bodies staining bright red with Sudan III in fair amounts, most of them displaced from their original positions; stelar region surrounded by endodermis, within which numerous patches of reduced vascular bundles containing a few xylem and phloem strands are seen; air spaces also sporadically present; starch grains similar to cortex present. Powder –Blackish pink, shows raphides, starch grains, parenchyma, vessel elements scalariform or pitted; non septate fibres 500 to 1000 µ; circular starch grains 8 to 12 µ in diameter.

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