Peucedanum decursivum is also a perennial herb, 70 to 140cm long. Conical root is from brownish yellow to brown and with strong aroma. Single stem is erect, round, and with edges on surface. Papery basal and lower leaves are triangular-ovate, and 1- or 2-pinnatisect. Acrogenous compound umbel is with unequal 12 to 20 inflorescence stems; purple petals are long ovate. Elliptic mericarp is 4 to 7mm long. Flowering time is from August to September and fruiting season is from September to October.
Peucedanum root contains coumarin compounds, coumarin glucoside compounds, D-mannitol, β-sitosterol, galactitol, daucosterol, etc. And coumarin compounds include praeruptorin A, B, C, and D, peucedanocoumarin Ⅰ, Ⅱ, Ⅲ, qianhucoumarin A, Psoralen, peucedanol, etc. Coumarin glucoside compounds include coumarin glucoside compounds, nodakenin, marmesin, skimmin, rutarin, praeroside Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ, decuroside Ⅳ, apiosylskimmin, etc.
Information obtained from: http://www.chineseherbshealing.com/peucedanum/