（宋《开宝》）
【释名】桓（《拾遗》）、木患子（《纲目》）、
珠子
藏器曰∶桓、患字，声讹也。崔豹《古今注》云∶昔有神巫曰瑶KT 能符劾百鬼，得
鬼则以此
也。
，与薏苡同名。《纂文》言其木名卢鬼木。山人呼为肥珠子、油珠子，因其实如肥油而子圆
如珠也。
【集解】藏器曰∶无患子，高山大树也。子黑如漆珠。《博物志》云∶桓叶似榉柳叶。
核坚正黑如 ，可作香缨及浣垢。
宗 曰∶今释子取为念珠，以紫红色、小者佳。入药亦少。西洛亦有之。
时珍曰∶生高山中。树甚高硕，枝叶皆如椿，特其叶对生。五、六月开白花。结实大如
弹丸，状如银杏及苦楝子，生青熟黄，老则纹皱。黄时肥如油炸之形，味辛气
下有二小子，相粘承之。实中一核，坚黑似肥皂荚之核，而正圆如珠。壳中有仁如榛子仁，
亦辛 ，可
甚妙。《山海经》云∶秩
中饮之，辟恶气，浣衣去垢，核坚正黑。即此也。今武当山中所出鬼见愁，亦是树荚之子，
其形正如刀豆子而色褐，彼人亦以穿数珠。别又是一物，非无患也。
子皮（即核外肉也）
【气味】微苦，平，有小毒。
【主治】浣垢，去面 。喉痹，研纳喉中，立开。又主飞尸（藏器）。
【附方】新二。
洗头去风明目。用 子皮、皂角、胡饼、菖蒲同捶碎，浆水调作弹子大。每用泡汤洗头
良。（《多能鄙事》）
洗面去 ∶ 子肉皮，捣烂，入白面和，丸大丸。每日用洗面，去垢及 甚良。（《集
简方》）。
子中仁
【气味】辛，平，无毒。
【主治】烧之，辟邪恶气（藏器）。
煨食，辟恶，去口臭（时珍）。
【附方】新一。
牙齿肿痛∶肥珠子一两，大黄、香附各一两，青盐半两，泥固 研。日用擦牙。（《普
济方》）
（引自宋代《开宝本草》）
【释名】桓（出自《海药本草拾遗》）、木患子（出自《本草纲目》）、珠子。
李藏器说：“桓”和“患”二字，是读音讹误所致。崔豹在《古今注》中说：从前有位神巫名叫瑶琨，能用符咒驱除百鬼，捉到鬼就用这个果实来击打它。这种树与薏苡同名。《纂文》说它的树名叫卢鬼木。山里人叫它肥珠子、油珠子，因为它的果实像涂了油脂一样肥润，而种子圆润如珠。
【集解】李藏器说：无患子是生长在高山上的一种高大树木。果实黑得像漆珠一样。《博物志》说：桓树的叶子像榉柳叶。果核坚硬且端正漆黑，可以制作香缨以及用来洗涤污垢。
苏颂说：现在人们取其中的种子做成念珠，以紫红色、个头小的为佳品。入药使用的情况较少。西洛地区也有出产。
李时珍说：生长在高山之中。树木非常高大硕壮，枝叶都像椿树，只是它的叶子是对生的。五、六月间开白花。结出的果实大如弹丸，形状像银杏及苦楝子，青色，成熟后变黄，老了则表面起皱纹。黄色时肥厚如同油炸过的形状，味道辛辣，气味芳香。果实下面有两个小种子，相互粘连承托着。果实中间有一个果核，坚硬漆黑类似肥皂荚的果核，但正圆如珠。壳中有仁，像榛子仁一样，也味辛气香，功效非常奇妙。《山海经》说：秩林中的这种树，饮用其汁液，可以辟除恶气，洗衣服能去除污垢，果核坚硬端正漆黑。指的就是这种树。现在武当山出产的“鬼见愁”，也是树荚的种子，形状正如刀豆子但颜色褐红，那里的人也用它们来穿制数珠。这是另一种植物，不是无患子。
子皮（即果核外面的果肉部分）
【气味】微苦，性平，有小毒。
【主治】洗涤污垢，去除面部的黑斑。喉痹（咽喉肿痛闭塞），研磨后纳入喉中，立即通畅。又主治飞尸（一种古代病名，藏器所述）。
【附方】新收录二首。
洗头去风明目：用无患子皮、皂角、胡饼、菖蒲一同捣碎，用浆水调制成弹子大小的丸子。每次使用时泡汤洗头，效果很好。（出自《多能鄙事》）
洗面去黑斑：取无患子果肉皮，捣烂，加入白面粉调和，制成梧桐子大小的丸子。每天用它洗脸，去除污垢及黑斑效果极佳。（出自《集简方》）
子中仁（果核内的种仁）
【气味】辛，性平，无毒。
【主治】烧熏，可辟除邪恶之气（李藏器所述）。
【附方】新收录一首。
(Sourced from the Song Dynasty *Kaibao Bencao*)
[Names] Huan (from *Haiyao Bencao Shiyi*), MuHuanzi (from *Bencao Gangmu*), Zhuizi.
Li Canger stated: The characters "Huan" and "Huan" are phonetic errors. Cui Bao in *Gujin Zhu* said: In ancient times, there was a divine shaman named Yaokun who could use talismans to subdue a hundred ghosts; upon capturing a ghost, he would strike it with this fruit. This tree shares the same name as Coix seed (*Yiyi*). *Zuanwen* states its tree name is Lugui Mu. Mountain dwellers call it Feizhuzi or Youzhuzi, because its fruit appears plump and oily, while its seeds are round like pearls.
[Collection and Explanation] Li Canger said: Wuhuanzi is a tall tree growing on high mountains. Its fruits are black like lacquered pearls. *Bowuzhi* states: The leaves of the Huan tree resemble those of Zelkova willow. The stone is hard, straight, and pitch-black; it can be used to make incense tassels and for washing away dirt.
Su Song said: Nowadays, people extract the seeds to make prayer beads; those that are purple-red and small are considered superior. It is rarely used in medicinal preparations. It is also produced in Xiluo.
Li Shizhen said: It grows in high mountains. The trees are very tall and robust; the branches and leaves resemble those of the Toona sinensis (*Chun*), except that its leaves are opposite. In May and June, it bears white flowers. The fruits are as large as pellets, resembling Ginkgo nuts and Chinaberry (*Kulianzi*), green when raw and yellow when ripe, becoming wrinkled when old. When yellow, they appear plump as if fried in oil, with a pungent taste and fragrant aroma. There are two small seeds beneath the fruit, adhering to and supporting each other. Inside the fruit is one stone, hard and black like the stone of Soap Pod (*Sapindus mukorossi*), but perfectly round like a pearl. Inside the shell is the kernel, similar to Hazelnut kernel, also pungent and fragrant, with excellent efficacy. *Shanhaijing* states: Drinking from the Zhi forest [referring to the tree], it repels evil qi, washes clothes to remove dirt, and the stone is hard, straight, and pitch-black. This refers to this tree. The "Guijianchou" found in Mount Wudang nowadays is also the seed of a tree pod; its shape is exactly like a Knife Bean but brown in color, and locals there also use them to string prayer beads. This is another distinct item, not Wuhuanzi.
Pericarp of the Fruit (i.e., the fleshy part outside the stone)
[Properties and Flavor] Slightly bitter, neutral in nature, slightly toxic.
[Indications] Washing away dirt, removing facial melasma. Hou Bi (sore throat with obstruction), grind into powder and insert into the throat, providing immediate relief. Also treats Feishi (a traditional disease concept, according to Canger).
[Attached Prescriptions] Two new prescriptions.
Washing hair to dispel wind and brighten eyes: Use Wuhuanzi pericarp, Gleditsia sinensis fruit (*Zaojiao*), Hu Bing (pancake), and Acorus tatarinowii root (*Changpu*), pound them together into a paste, mix with fermented grain water to form pills the size of a quail egg. For each use, soak in hot water to wash the head. Effective. (From *Duoneng Bishi*)
Washing face to remove melasma: Take the fleshy pericarp of Wuhuanzi, pound until soft, mix with white flour, and roll into pills the size of phoenix seeds. Use daily to wash the face; effectively removes dirt and melasma. (From *Jijian Fang*)
Kernel inside the Stone
[Properties and Flavor] Pungent, neutral in nature, non-toxic.
[Indications] Burning it repels evil and malignant qi (according to Canger).
Roasting and eating it repels evil qi and removes bad breath (according to Shizhen).
[Attached Prescriptions] One new prescription.
Toothache and swelling: Feizhuzi 1 liang, Rhubarb (*Dahuang*), Cyperus rotundus (*Xiangfu*) each 1 liang, Green Salt (*Qingyan*) 0.5 liang. Seal with mud and grind finely. Use daily to brush teeth. (From *Puji Fang*)