\r 头\ph291.bmp\r，文具天南星条下。
\r山豆根\ph292.bmp\r，生剑南山谷，今广西亦有，以忠、万州者佳。苗蔓如豆根，
以此为名。叶青，经冬
不凋。八月采根用。今人寸截，含以解咽喉肿痛，极妙。广南者，如小槐，高尺余。石鼠食
其根。故岭南人捕石鼠，破取其肠胃曝干，解毒攻热，甚效。
\r威灵仙\ph293.bmp\r，出商州上洛山及华山并平泽，今陕西州军等及河东、河北、
京东、江湖州郡或有之
。初生比众草最先，茎梗如钗股，四棱；叶似柳叶，作层，每层六、七叶，如车轮，有六层
至七层者；七月内生花，浅紫或碧白色，作穗似莆台子，亦有似菊花头者；实青；根稠密多
须似谷，每年亦朽败。九月采根，阴干。仍以丙、丁、戊、己日采，以不闻水声者佳。唐正
元中，嵩阳子周君巢作威灵仙传云∶先时，商州有人重病足不履地者数十年，良医殚技莫能
疗。所亲置之道旁，以求救者。遇一新罗僧见之，告曰∶此疾一药可活，但不知此土有否？
因为之入山求索，果得，乃威灵仙也。使服之，数日能步履。其后山人邓思齐知之，遂传其
事。崔元亮《海上方》着其法云∶采得，阴干月余，捣筛，温清酒和二钱匕，空腹服之。如
人本性杀药，可加及六钱匕，利过两行，则减之，病除乃停服。其性甚善，不触诸药，但恶
茶及面汤，以甘草、栀子代饮可也。
头（指头部疾病或相关药物，此处指天南星条目下的内容），在“文具”（文具/文具类，此处可能为排版错误或特定分类标识，结合上下文应指天南星条下）的天南星条目下已有记载。
山豆根，生长于剑南山谷，如今广西也有出产，其中以忠州、万州所产的品质最佳。其茎叶藤蔓像豆类的根，因此得名。叶子青色，经过冬天也不凋谢。八月采集根部使用。现在的人将其切成寸段，含在口中以缓解咽喉肿痛，效果极好。广南地区出产的山豆根，形状像小槐树，高约一尺多。石鼠食用它的根。所以岭南地区的人捕捉石鼠，剖开取其肠胃晒干，用于解毒清热，效果非常显著。
威灵仙，产于商州上洛山以及华山和平泽等地，如今陕西各州军以及河东、河北、京东、江湖等州的郡县有时也能找到。它刚出生时比周围的草长得最早，茎梗像发钗的股部，呈四棱形；叶子像柳叶，层层叠生，每层有六七片叶子，排列如车轮状，通常有六层至七层；七月内生花，花色浅紫或碧白色，花序像蒲台的穗子，也有像菊花头的；果实青色；根部稠密且多须根，类似谷物根系，每年也会朽败。九月采集根部，阴干。仍以丙日、丁日、戊日、己日采集为佳，以采集时听不到水声的地方出产的为优。唐代正元年间，嵩阳子周君巢撰写《威灵仙传》说：先前，商州有个人重病几十年双脚不能着地行走，名医们用尽医术也无法治愈。他的亲友将他放置在路边，以此寻求救治者。遇到一位新罗僧人看见他，告诉他们说：这种病有一种药可以治好，只是不知道此地是否有？于是为他进山寻找，果然找到了，就是威灵仙。让他服用后，几天就能行走了。后来山人邓思齐知道了这件事，于是传播开来。崔元亮在《海上方》中记载了这种方法：采集后，阴干一个多月，捣碎筛粉，用温热的清酒调和二钱匕的药粉，空腹服用。如果病人本性耐受峻烈药物，剂量可增加至六钱匕，若腹泻超过两次，则减少剂量，病愈后停止服用。威灵仙药性温和善良，不与其他药物冲突，只是厌恶茶及面汤，可以用甘草、栀子代替茶水饮用。
Head (referring to conditions of the head or related herbs; content is listed under the entry for Arisaema Cum Bile / Tian Nan Xing).
*Thomsoniae Radix* (Shan Dou Gen) grows in the valleys of Mount Jian. It is now also found in Guangxi, with those from Zhongzhou and Wanzhou being considered the best. Its vines resemble bean roots, which gives it its name. The leaves are green and do not wither through winter. The roots are harvested in August. Currently, people cut them into inch-long segments and hold them in the mouth to relieve sore throat and swelling, which is extremely effective. In Guangnan, *Thomsoniae Radix* resembles a small locust tree (*Robinia pseudoacacia*), growing over a chi tall. Stone rats eat its roots. Therefore, people in Lingnan capture stone rats, dissect them to take their intestines and stomachs, dry them, and use them to resolve toxicity and clear heat, with very good efficacy.
*Clematidis Radix et Rhizoma* (Wei Ling Xian) originates from Shangluo Mountain in Shangzhou, as well as Mount Hua and flat marshes. It is currently found in various prefectures and military commands in Shaanxi, Hedong, Hebei, Jingdong, and Jianghu regions. When first sprouting, it grows earlier than other grasses. The stems are like the shafts of hairpins, square in cross-section. The leaves resemble willow leaves, arranged in whorls, with six or seven leaves per whorl, resembling a chariot wheel, typically having six to seven layers. Flowers appear in July, light purple or jade-white, in spikes resembling *Acorus calamus* inflorescences, or sometimes resembling chrysanthemum heads. The fruits are green. The root system is dense with many fibrous roots, similar to grain roots, and decays annually. Roots are harvested in September and dried in the shade. Harvesting on Bing (Fire-Yang), Ding (Fire-Yin), Wu (Earth-Yang), or Ji (Earth-Yin) days is preferred, especially from areas where no water sounds can be heard. In the Zhengyuan era of the Tang Dynasty, Songyangzi Zhou Junchao wrote "Biography of Wei Ling Xian": Previously, a person in Shangzhou suffered from a severe illness that prevented him from walking on his feet for decades. Expert doctors exhausted their skills but could not cure him. His relatives placed him by the roadside to seek help. A Silla monk who saw him said: "This disease can be cured with one herb, but I do not know if it exists here." He then went into the mountains to search and indeed found it, which was *Clematidis Radix et Rhizoma*. After taking it, he could walk within a few days. Later, a mountain dweller named Deng Siqi learned of this and spread the story. Cui Yuanliang recorded the method in "Hai Shang Fang": After harvesting, dry in the shade for over a month, grind and sieve. Mix two qian bi (a traditional measure) with warm clear wine and take on an empty stomach. If the patient's constitution tolerates strong medicines, the dose may be increased to six qian bi. If diarrhea exceeds two stools, reduce the dose. Stop taking it when the disease is cured. Its nature is very gentle and does not conflict with other herbs, but it clashes with tea and wheat-based soups. Licorice root (*Glycyrrhizae Radix et Rhizoma*) and Gardenia fruit (*Gardeniae Fructus*) can be used as substitutes for drinking water.