138 BOTANICON SINICUM. 
Ii Sai-cuen :—There is the 4 [| tse‘ (purple) su and 
the FY | pai (white) sw. The seeds of both are sown in 
the 2nd and 8rd months. They grow also spontaneously 
from seeds left on the ground. Square stem, roundish, 
pointed, toothed and serrated leaves. In a rich soil it (the 
tsz* su) has leaves of a purple colour on both sides, but 
in a poor soil they are green on the upper side, purple only 
underneath. The pai or white su has its leaves white 
(downy) on both sides. This is the #£ jen. The young 
leaves of the purple su are eaten as vegetable food salted 
or pickled together with the mei fruit [Prunus Mume. 
See 272]. In summer they make a beverage of the leaves, 
which are very fragrant. The root is also used. In the 
8th month it opens its small purple flowers, arranged in 
spikes, and afterwards capsules are formed like those of the 
king kie (Salvia. See 65]. In the 9th month, when the 
plant is half withered, the seeds are gathered. These are 
small, like mustard seeds, of a yellowish red colour. They 
yield an oil like the oil obtained from the jen. 
The sw and the jen are species of Perilla. For farther 
particulars, see Bot. sin., II, 64. 
Cust. Med., p. 373 (422):—Su tsz* (seeds) exported 
1885 from Canton 24 piculs,—p. 164 (360), from Shang hai 
3 piculs,—p. 200 (241), from N ing po 2 piculs. 
Ibid., p. 298 (360) :—Tsz* su from Amoy 2.5 piculs. 
Ibid., p. 180 (142):—Pai su tsz* from Chin kiang 
9.7 piculs,—p. 110 (164), from Wu hu 6 piculs. 
Lbid., p. 360 (275, 276):—Su stalks and leaves, from 
Canton 24 piculs. . 
68.—2K BR shut su. P., XIVb, 97. 7., LVI. 
Pen king :—Shui (water) sw. The stem and the leaves 
are officinal. Taste pungent. Nature slightly warm. Non- 
poisonous. 
