3.Arnica flowers

Bot.origin: The dried flower heads of Arnica Montana.

F: compositae. 

Active constituent:

1.  volatile oil

2.  arnicin

3.  coloring agent

Key element (microscopically examination):

1.     Bristle. 

2.     twin hair

    Uses:

1.     Local irritant.

2.     As stimulant to increase temperature and secretions.

Report in the lab.

twin hair

Bristle.