Rhizoma seu
Radix Notopterygii
Source
Rhizome of Notopterygium incisum Ting ex H.T. Chang or the rhizome and
root of N. forbesii Boiss, family Umbelliferae.
Characteristics
Rhizome stoutly terete, with dense and protruded nodes and rounded 
stem
bases remained at the tip, the whole shape like a silk-worm, named Silkworm
Notopterygium; those with thin intemodal spaces named Nodal Notoptepygium;
N. forbesii, with nodes at the rhizome and no nodes at the root named
Striped Notopterygium. Cross section of the three loosely radial, with
characteristic fragrance. Acrid and bitter in taste, warm in nature, and
attributive to urinary bladder and kidney channels.
Indication
Expel cold and induce sweating to expel the exogenous evils from the 
body
surface: For common cold of wind-cold type with severe headache and general
pain, recurrent headache or headache of wind-cold type, rheumatism, usually
used together with Radix Ledebourieliae, Rhizoma Ligustici Chuanxiong
and Radix Angelicae Dahuricae, etc.
Pharmacological
Action
Its volatile oil relieves acute myocardial ischemia and increases coronary
flow in experimental animals.
Administration
Decoction: 3-10g.