[Macroscopic and microscopic identification of Ligularia przewalskii]

To provide macroscopic and microscopic identification basis for Ligularia przewalskii.

Macroscopic and microscopic identification of roots, stems and leaves of Ligularia przewalskii were carried out with the methods of paraffin section, leaves epidermal section and powder transdermal section.

The microscopic characteristics included: Open collateral vascular bundles in stem were not in the same size and arranged in two rings; Lots of fiber bundles scattered in the column parts; There were two vascular bundles in principal vein of leaf; Anticlinal wall of upper epidermis cells was thickened like moniliform, lower epidermis were like waves with irregular; The type of stoma was anomocytic; Calcium oxalate acicular crystal could be seen in the powder.

These features can provide references for identification of Ligularia przewalskii.