叶如小杏叶，但微薄而绿色差淡。子，八、九月熟，初青后黑，分为三瓣。取子出油
，燃灯及染发。
气虚人亦宜，缓缓煨熟，少服。此物虽涩肠，而又泄气，盖其味苦涩。
椿木华、椿樗皆臭，但一种有花结子，一种无花不实。世以无花不实、木身
大、其干端直者为椿。椿用木叶。其有花而荚，木身小，干多迂矮者为樗。樗用根、叶、荚
。故曰未见椿上有荚者，惟樗木上有。又有樗鸡，故知古人命名曰不言椿鸡、而言樗鸡者，
以显有鸡者为樗，无鸡者为椿，其义甚明。用椿木叶，樗木根、叶、荚者，宜依此推究。洛
阳一女子，年四十六七，耽饮无度，多食鱼蟹，摄理之方蔑如也。后以饮啖过常，蓄毒在脏
，日夜二三十泻，大便与脓血杂下，大肠连肛门痛不堪忍。医以止血痢药不效，又以肠风药
则益甚。盖肠风则有血而无脓，凡如此已半年余，气血渐弱，食渐减，肌肉渐瘦，稍服热药
，则腹愈痛，血愈下。服稍凉药，即泄注，气羸，粥愈减。服温平药，则病不知。如此将暮
岁，医告术穷，垂命待尽。或有人教服人参散，病家亦不敢主当，谩与服之，才一服，知。
二服，减。三服，脓血皆定。自此不十服，其疾遂愈。后问其方，云∶治大肠风虚，饮酒过
度，挟热下痢脓血，疼痛，多日不瘥。樗根白皮一两，人参一两，为末，每用二
钱匕，空心以温酒调服。如不饮酒，以温米饮代。忌油腻、湿面、青菜、果子、甜物、鸡、
猪、鱼腥等。
叶形像小杏叶，只是更薄且绿色较淡。果实于八月、九月成熟，起初为青色，后来变黑，分为三瓣。取出果仁榨油，可用于点灯和染发。
气虚之人也适宜服用，需慢慢煨熟后少量服用。此物虽然能涩肠止泻，但同时也耗泄正气，因为其味道苦涩。
椿木花与樗树（臭椿）都有臭味，区别在于一种开花结果，一种不开花不结果。世间将不开花不结果、树干高大、主干端正笔直的称为椿。椿树使用其木叶。而那种有花且有荚果、树干较小、主干多弯曲矮小的称为樗。樗树使用其根、叶、荚。所以说没见椿树上有荚果的，只有樗树上有。又有“樗鸡”这种昆虫，所以知道古人命名时不说“椿鸡”而说“樗鸡”，是为了表明有樗鸡的是樗树，没有的是椿树，其中的道理非常明确。使用椿树叶、樗树根、叶、荚的人，应当依据此理推究。
洛阳有一位女子，年龄四十六七岁，饮酒无度，多吃鱼蟹，对养生调理的方法毫不在意。后来因为饮食过量，毒素蓄积在脏腑中，每天腹泻二三十次，大便与脓血混杂而下，大肠连肛门疼痛难忍。医生用治疗血痢的药物无效，改用治疗肠风的药物则病情加重。大概肠风症只有血而没有脓，像这种情况已经持续半年多，气血逐渐虚弱，食欲逐渐减退，肌肉逐渐消瘦。稍微服用热性药物，腹痛加剧，出血更多；服用稍凉的药物，立即导致泄泻不止，气力更弱，粥食摄入更少；服用温平性质的药物，则对病情毫无作用。如此接近晚年，医生宣告医术穷尽，只能等待死亡。有人教她服用人参散，病家也不敢做主，只是随意让她服用。才服一次，感觉好转；服两次，症状减轻；服三次，脓血便停止。从此不到十次服药，疾病痊愈。后来询问药方，说是：治疗大肠风虚，因饮酒过度，挟带热邪导致的下痢脓血、疼痛，多日不愈。樗根白皮一两，人参一两，研为细末，每次取二钱匕，空腹时用温酒调服。如果不饮酒，可用温米汤代替。忌食油腻、湿面、青菜、水果、甜食、鸡肉、猪肉、鱼腥等食物。
The leaves resemble those of small apricot trees, but are thinner and a paler green. The fruits ripen in the eighth and ninth lunar months, initially green and turning black later, dividing into three sections. Oil is extracted from the seeds, which can be used for lamp fuel and dyeing hair.
It is also suitable for individuals with Qi deficiency; it should be slowly roasted and taken in small doses. Although this substance astringes the intestines, it also drains Qi, due to its bitter and astringent taste.
Both Toona sinensis (Zheng Chun) flowers and Cedrela sinensis (Chou Chu) have an odor, but one produces flowers and fruit while the other does not. In common usage, the tree that bears no flowers or fruit, has a large trunk, and a straight main stem is called Zheng Chun (Toona). The leaves and twigs of Zheng Chun are used. The tree that bears flowers and pods, has a smaller trunk, and a crooked, short main stem is called Chou Chu (Cedrela). The roots, leaves, and pods of Chou Chu are used. Therefore, it is said that no pods are seen on Zheng Chun, only on Chou Chu. There is also an insect known as "Chou Ji" (Cedrela bug), so it is understood why the ancients named it "Chou Ji" rather than "Zheng Ji," clearly indicating that the presence of the bug identifies the tree as Chou Chu, and its absence as Zheng Chun. This distinction is very clear. Those using Zheng Chun leaves and Chou Chu roots, leaves, and pods should investigate according to this principle.
A woman in Luoyang, aged forty-six or forty-seven, drank excessively and consumed large amounts of fish and crab, disregarding health regimens. Later, due to overindulgence in food and drink, toxins accumulated in her zang-fu organs, causing thirty or more bowel movements daily, with stool mixed with pus and blood. The pain in the large intestine extending to the anus was unbearable. Physicians' attempts to stop bloody dysentery were ineffective, and treatments for wind-intestinal conditions exacerbated the symptoms. Generally, wind-intestinal conditions present with blood but no pus. Such a condition had persisted for over half a year, leading to gradual weakening of Qi and Blood, reduced appetite, and emaciation. Slightly warm herbs intensified abdominal pain and bleeding; slightly cool herbs caused immediate diarrhea, further depleted Qi, and reduced porridge intake; neutral-warm herbs had no effect on the disease. Approaching old age, physicians declared their methods exhausted, leaving her to await death. Someone advised taking Renshen San (Ginseng Powder). The patient's family hesitated but administered it casually. After one dose, she felt improvement; after two doses, symptoms decreased; after three doses, pus and blood stopped. Within ten doses, the illness was cured. When asked about the prescription, it was explained: It treats Large Intestine Wind-Deficiency, dysentery with pus and blood and pain caused by excessive alcohol consumption and internal heat, persisting for many days without recovery. The formula consists of 1 liang of Cortex Meliae (Quch Gen Bai Pi) and 1 liang of Radix Ginseng (Renshen), ground into powder. Each time, take 2 qian bi, taken on an empty stomach with warm wine. If wine is not consumed, warm rice gruel may be used instead. Avoid greasy foods, wet dough, green vegetables, fruits, sweets, chicken, pork, and fishy odors.