【气味】
甘平无毒。入足少阴肾经君药。
【主治】
妇人乳痈水肿。散滞气。化热毒。擦牙乌须发。壮筋骨。亦可入阳明太阴经。凡治
乳痈。以忍冬藤同煎汤入酒佐服。服罢欲睡。睡觉微汗。是其效也。
【气味】
咸甘平无毒。
【主治】
伤中疝瘕阴痿。益精生子。女子血闭腰痛。通五淋。利小便水道。乃肝肾命药也。
凡男子身衰精自出。及小便自利者加用之。又小便如稠胶米泔。心神恍惚悴瘦食减。得之女
劳者。以桑螵蛸为君。佐以远志菖蒲人参茯神之属。无不应效。如无桑上者。即用他树所生
。佐以炙桑白皮。亦可行水以接螵归就肾经。
（香者名椿。臭者名樗。椿樗二树形相似。樗木疏。椿木实。凡使椿根不近西头者为
上。采出拌生葱蒸半日。锉细。以袋盛挂屋南畔。阴干用。）
【气味】
苦温无毒。樗根有小毒。
【主治】
椿根白皮性凉而能涩血。凡湿热为病。泻痢浊带精滑梦遗诸证。无不用之。有燥下
湿。及去肺胃陈痰之功。治泄泻有除湿实肠之力。但痢疾滞气未尽者。不可遽用。宜入丸散
。亦可煎服。不见有害。椿皮色赤而香。樗皮色白而臭。椿皮入血分而性涩。樗皮入气分而
性利。不可不辨。其主治之功虽同。而涩利之效则异。凡血分受病不足者宜用椿皮。气分受
病有郁者宜用樗皮。此心得之微也。
[Flavor and Nature]
Sweet in flavor, neutral in nature, non-toxic. Enters the Foot-Shaoyin Kidney Meridian as a sovereign drug (Jun Yao).
[Maintaining Health / Indications]
Treats breast abscess (Ru Yong) and edema in women. Disperses stagnant Qi, resolves heat toxins. Rubbing teeth with it darkens beard and hair. Strengthens sinews and bones. It can also enter the Yangming and Taiyin meridians. In all cases of treating breast abscess, decoct Lonicerae Japonicae Caulis (Rendong Teng) together, add wine to assist administration. After taking it, the patient desires sleep; upon waking, there is slight sweating, which indicates its efficacy.
[Flavor and Nature]
Salty and sweet in flavor, neutral in nature, non-toxic.
[Maintaining Health / Indications]
Treats internal injury-related hernia, mass accumulation (Jia), and impotence. Benefits essence and promotes procreation. Treats amenorrhea and lower back pain in women. Unblocks the five types of strangury (Lin Zheng), facilitates urination via the water passages. It is a key medicine for the Liver, Kidney, and Mingmen. Whenever men suffer from physical decline and spontaneous emission of essence, or frequent and clear urination, this herb should be added. Additionally, for conditions where urine resembles thick glue or rice washings, accompanied by mental restlessness, emaciation, fatigue, and reduced appetite, caused by sexual exhaustion, use Sangpiaoxiao as the sovereign drug, assisted by Yuanzhi, Shichangpu, Renshen, Fushen, etc., without exception of efficacy. If those grown on mulberry trees are unavailable, those from other trees may be used. Assist with roasted Morus Alba Cortex (Sangbaipi) to promote water metabolism and guide the substance into the Kidney meridian.
(The fragrant one is named Chun [Toona], the foul-smelling one is named Chu [Ailanthus]. The two trees look similar. Chu wood is loose, Chun wood is solid. When using Chun root, the part not near the western end is considered superior. After harvesting, mix with raw scallions, steam for half a day, cut finely, place in a bag, hang on the south side of the house, and dry in shade for use.)
[Flavor and Nature]
Bitter in flavor, warm in nature, non-toxic. Chu root has slight toxicity.
[Maintaining Health / Indications]
The white bark of Chun tree is cool in nature and possesses astringent properties to stop bleeding. It is used for all conditions caused by damp-heat, such as diarrhea, dysentery, turbid leukorrhea, seminal emission, and nocturnal emission. It has the function of drying dampness and directing it downward, as well as eliminating old phlegm from the Lung and Stomach. In treating diarrhea, it has the power to remove dampness and firm the intestines. However, if the stagnation of Qi in dysentery has not yet been cleared, it should not be used abruptly. It is suitable for pills and powders, or decoction, with no observed harm. Chun bark is red and fragrant; Chu bark is white and foul-smelling. Chun bark enters the Blood level and is astringent; Chu bark enters the Qi level and is draining/unblocking. This distinction must not be overlooked. Although their main indications are similar, their effects of astringency and draining differ. For diseases affecting the Blood level with deficiency, Chun bark is appropriate; for diseases affecting the Qi level with stagnation, Chu bark is appropriate. This is a subtle point derived from personal experience.