\r樗根白皮\pj289.bmp\r
味苦涩，气寒。有小毒。南北俱各有生，其木最为无用。本多痈肿，难定墨绳。枝乃曲
拳，不中规矩。与椿木相类，
须辨认分明。无花不实，木身大，其干端直者为椿；有花而荚，木身小，干多适矮者为樗。
又曰∶椿本实而叶香，樗木
疏而气臭。今人不识樗名，故多呼为臭椿树也。入剂挖东引细根，刮外取白皮蜜炙。止女人
月信过度，久痢带漏崩中。
禁男子夜梦遗精滑泄，肠风痔 。缩小水，驱蛔虫。其荚收采曝干，大便去血尤效。
椿白皮主疳 ，亦惟白
者为良。止血功同，女科任用。
（谟）按∶汪石山曰∶椿、樗二木各有两种，一种皮赤，一种皮白。白者先花后叶，其
树身皮
粗糙如粟粒；赤者先叶后花，其树身皮细腻而不粗。叶皆相同，香臭无别。医之所取，皆在
白皮。故入药无间椿、樗，但择皮白者采收，不必以香臭为泥也。
\r榆皮\pj290.bmp\r
味甘，气平。性滑利，降也。无毒。多生山谷，处处有之。取向里白皮，旋晒干入药
。勿令中湿，湿则伤人。通水道，除五淋，压丹石，利关节。捣和酽醋，凡赤肿薄敷；煎成
膏饴，但寒鼽连服。老人服久多睡，孕妇服即滑胎。新剥捣烂如糊，用粘瓦石甚固。
皮涎敷癣，杀虫立差。叶压石丹尤灵，生服一两顿效。为羹日饮，水肿即消。
花主小儿惊痫，亦利尿管闭涩。实生有荚，作酱甚香。因味微辛，肺气能助。杀
诸虫，消心腹恶气并卒心疼；
疗小儿，涂痂 头疮及诸癣疥。荚作羹少和牛肉，妇人食即止带崩。
樗根白皮
味道苦涩，气性寒凉。有小毒。南北各地都有生长，其木材最为无用。树干多生节瘤肿块，难以用墨线校正。树枝弯曲如拳，不符合规矩标准。与椿树相似，必须仔细辨认清楚。椿树无花不实（注：此处原文可能有误，通常椿有花，但古籍描述各异，依原文直译），树干高大，主干端正笔直的是椿树；樗树有花且有荚果，树干较小，主干多矮小弯曲的是樗树。又说：椿树木质坚实且叶子芳香，樗树木质疏松且气味臭秽。现在的人不认识樗树的名字，所以大多叫它臭椿树。入药时挖掘向东生长的细根，刮去外层取白色树皮，用蜂蜜炙烤。能止住妇女月经量过多、长期痢疾带下、崩漏等症状。禁止男子夜间梦遗、滑精泄泻，以及肠风痔漏。能缩小小便，驱除蛔虫。其荚果采收后晒干，治疗大便出血尤其有效。椿白皮主治小儿疳积，也只有白色的才良效。止血功效相同，妇科均可使用。（陈嘉谟）按语：汪石山说：椿和樗两种树木各有两种，一种树皮红色，一种树皮白色。白色的先开花后长叶，树干表皮粗糙像粟米粒；红色的先长叶后开花，树干表皮细腻不粗糙。叶子都相同，香气和臭气没有区别。医生所取的，都在白色树皮上。所以入药不分椿和樗，只要选择白色树皮的采收即可，不必拘泥于香气或臭气。
榆皮
味道甘甜，气性平和。性质滑利，具有下降作用。无毒。多生长在山谷中，到处都有。选取靠近树心的白色树皮，随即晒干入药。不要让其中湿，湿了就会伤害人体。通利水道，消除五种淋证，压制丹石药毒性，通利关节。捣碎混合浓醋，凡是赤肿薄敷；煎制成膏饴，只要是寒性鼻渊连续服用。老人久服容易多睡，孕妇服用会导致流产。新剥下的皮捣烂如糊状，用来粘合瓦石非常牢固。树皮粘液敷治癣疮，杀虫立刻见效。叶子压制石丹药毒性尤其灵验，生服一两顿服即效。做成羹汤每日饮用，水肿即可消退。花朵主治小儿惊痫，也能通利尿道闭塞涩痛。果实生长有荚果，做酱很香。因为味道微辛，能辅助肺气。杀死各种虫子，消除心腹恶气和突然心痛；治疗小儿疾病，涂抹痂秃头疮以及各种癣疥。荚果做羹汤少量配合牛肉，妇人食用即可止住带下和崩漏。
Cortex Broussonetiae Papyriferae (Chugen Baipi)
Taste: bitter and astringent. Nature: cold. Slightly toxic. Grows in both north and south; its wood is of little use. The trunk is often knotty and swollen, making it difficult to align with a carpenter's ink line. Branches are curled like fists, failing to meet standard rules and squares. It resembles Toona sinensis (Xiangchun), requiring clear distinction. [Note: Original text describes characteristics distinguishing them]. The tall tree with an upright trunk is Toona sinensis; the smaller tree with flowers and pods, often short and crooked, is Broussonetia papyrifera (Chuchun). Furthermore: Toona sinensis has solid wood and fragrant leaves, while Broussonetia papyrifera has loose wood and foul odor. Modern people do not recognize the name "Chu," hence commonly calling it "Stinky Toona." For medicinal use, dig up fine roots growing eastward, scrape off the outer layer to obtain the white bark, and honey-fry it. It stops excessive menstruation in women, chronic dysentery with leukorrhea, and metrorrhagia. It prevents nocturnal emission, spermatorrhea, and seminal leakage in men, as well as intestinal wind and hemorrhoids. It reduces urinary volume and expels roundworms. Its pods, when harvested and sun-dried, are especially effective for hematochezia (blood in stool). Cortex Toonae Sinensis (Chunbaipi) treats pediatric malnutrition (Gan syndrome); only the white variety is superior. Its hemostatic effect is similar, and it is used in gynecology.
[Commentary by Mo]: Wang Shishan stated that both Toona sinensis and Broussonetia papyrifera have two varieties: one with red bark and one with white bark. The white-barked variety flowers before leafing out, with rough bark resembling millet grains; the red-barked variety leaves out before flowering, with smooth and fine bark. The leaves are identical, with no difference in fragrance or odor. Medicinally, only the white bark is utilized. Therefore, in prescriptions, there is no distinction between Toona sinensis and Broussonetia papyrifera; one need only select the white-barked variety for collection, without being constrained by whether it smells fragrant or foul.
Cortex Ulmi (Yupi)
Taste: sweet. Nature: neutral. Property: slippery and lubricating, descending. Non-toxic. Grows abundantly in valleys and is found everywhere. Select the inner white bark, dry it immediately for medicinal use. Do not let it become damp, as dampness harms the body. It promotes urination, eliminates five types of strangury (Wulin), counteracts the toxicity of mineral drugs (Danshi), and benefits joints. Crushed and mixed with strong vinegar, it is applied thinly for erythema and swelling. Boiled into a paste/malt syrup, it is taken continuously for cold-type rhinorrhea (Qiu). Long-term use by the elderly causes excessive sleepiness; use by pregnant women induces abortion. Freshly stripped bark, pounded into a paste, adheres strongly to tiles and stones. Bark slime applied to tinea (ringworm) kills parasites instantly. Leaves are particularly effective in countering mineral drug toxicity; taking 1 liang raw in one dose yields immediate results. Consumed daily as a soup, edema resolves. Flowers treat pediatric convulsions and epilepsy, and also relieve urinary obstruction and difficulty. Fruits grow in pods, which make fragrant sauce. Due to its slightly pungent taste, it assists Lung Qi. It kills various insects, dissipates malignant qi in the heart and abdomen, and sudden heart pain; treats pediatric conditions, applies to scalding head sores and various tinea and scabies. Pods made into soup with a small amount of beef stop leukorrhea and metrorrhagia in women upon consumption.