284 BOTANICON SINICUM. 
Wo Pv [8rd cent.]:—Other names: BR A ch‘u sin, 
He BE tu ken (poisonous root). The kow wen grows in the 
mountains of Nan Yiie [S. China, App. 233], also in Han 
shi shan [App. 57] and in I chou [Sz ch‘uan, App. 102]. 
Its leaves resemble those of the fo [ Pachyrhizus. See 194]. 
Red, square stem, resembling an arrow. Yellow root, which 
is dug up in the Ist month. 
T‘ao Huna-x1ne :—This drug when introduced into the 
mouth causes pain in the throat. There is one kind of the 
kou wen which in its leaves resembles the huang tsing 
[Polygonatum. See 7). It has a purple stem and yellow 
flowers. The young plant has a strong resemblance to the 
huang tsing, and the plants are frequently confounded. As 
the first-mentioned plant is poisonous it causes death when 
taken.—[Comp. sub 7 the legend regarding these two plants. ] 
Su Kune [7th cent.]:—The ye ko grows in Kui chou 
[in Kuang si, App. 164]. In the south it is a common 
plant near villages, on burial wastes and on roads. The 
people there call it ko wen, but properly kou wen is the 
name for the herbaceous part of the plant, whilst the root 
is called ye ko. It is a climber. Leaves like those of the 
shi [Diospyros. See 279]. The fresh root, when just taken 
out, has a white skin and a yellow bone (centre). The old 
root resembles the ti ky [Lycium. See 345], the young 
root the lan Jang ki [ Cocculus. See 183]. It resembles 
also the pat hua teng [white-flowered Liana. Unknown to 
me]. When the fresh root is broken it does not exhale 
any vapor (odour), but when one year old a vapor is emitted 
from the small pores of the substance of the root. The 
root of the kou kh; [Lycium. See 3845] shows the same 
peculiarity. That which the Pie lu states regarding the blue 
vapors [v. supra] is not intelligible. When people by mistake 
happen to eat the leaf of this plant they die, whilst sheep 
_ browse on it without being injured and even grow fat. 
