（《本经》中品）
【校正】自木部移入此。
宗 曰∶龙眼专为果，未见入药。本草编入木部，非矣。
【释名】龙目（《吴普》）、圆眼（俗名）、益智（《本经》）、亚荔枝（《开宝》）、荔枝奴、
骊珠、燕卵、蜜脾、鲛泪、
时珍曰∶龙眼、龙目，象形也。《吴普本草》谓之龙目，又曰比目。曹宪《博雅》谓之
益智。
弘景曰∶广州有龙眼，非益智也，恐彼人别名耳。
志曰∶甘味归脾，能益人智，故名益智，非今之益智子也。
颂曰∶荔枝才过，龙眼即熟，故南人目为荔枝奴。又名木弹。晒干寄远，北人以为佳果
，目为亚荔枝。
【集解】《别录》曰∶龙眼生南海山谷。一名益智。其大者似槟榔。
恭曰∶龙眼树似荔枝，叶若林檎，花白色。子如槟榔，有鳞甲，大如雀卵。
颂曰∶今闽、广、蜀道出荔枝处皆有之。嵇含《南方草木状》云∶木高一、二丈，似荔
枝而枝叶微小，凌冬不凋。春末夏初，开细白花。七月实熟，壳青黄色，纹作鳞甲，形圆，
大如弹丸，核若木 子而不坚，肉薄于荔枝，白而有浆，其甘如蜜。实极繁，每枝三、二十
颗，作穗如蒲桃。汉时南海常贡之，大为民害。临武长唐羌上书言状，和帝感其言，下诏止
之。
时珍曰∶龙眼正圆，《别录》、苏恭比之槟榔，殊不类也。其木性畏寒，白露后方可采
摘，晒焙令干，成朵干者名龙眼锦。按范成大《桂海志》有山龙眼，出广中，色青，肉如
龙眼，夏月实熟可啖，此亦龙眼之野生者欤？
实
【气味】甘，平，无毒。恭曰∶甘、酸，温。李鹏飞曰∶生者沸汤瀹过食，不动脾
【主治】五脏邪气，安志厌食。除蛊毒，去三虫。久服强魂聪明，轻身不老，通神明（
《本经》）。开胃益脾，补虚长智（时珍）。
【发明】时珍曰∶食品以荔枝为贵，而资益则龙眼为良。盖荔枝性热，而龙眼性和平也
。严用和《济生方》，治思虑劳伤心脾有归脾汤，取甘味归脾、能益人智之义。
【附方】新一。
归脾汤∶治思虑过度，劳伤心脾，健忘怔忡，虚烦不眠，自汗惊悸。用龙眼肉、酸枣仁
（炒）、黄 （炙）、白术（焙）、茯神各一两，木香、人参各半两，炙甘草二钱半， 咀。
每服
核
【主治】胡臭。六枚，同胡椒二、七枚研，遇汗出即擦之（时珍）。
(Recorded in the Middle Category of the *Shennong Bencao Jing*)
[Correction] Transferred from the Wood Section to this section.
Su Song stated: Longan is primarily used as a fruit and has not been seen used as medicine. Including it in the Wood Section of the Materia Medica is incorrect.
[Names] Longmu (from *Wu Pu Bencao*), Yuanyan (common name), Yizhi (from *Shennong Bencao Jing*), Yalizhi (from *Kaibao Bencao*), Lizhinu, Lizhu, Yanluan, Mibi, Jiaolei.
Li Shizhen stated: "Longyan" and "Longmu" are named based on their shape resembling a dragon's eye. *Wu Pu Bencao* calls it Longmu, also referred to as Bibai. Cao Xian's *Bo Ya* calls it Yizhi.
Tao Hongjing stated: Longan is produced in Guangzhou; it is not Yizhi (*Alpinia oxyphylla*, Chinese Yellow Cardamom Seed), but likely an alias used by local people.
Su Song cited earlier texts: Sweet flavor enters the Spleen and can enhance human intelligence, hence the name Yizhi, which is not the current Yizhiren (*Alpinia oxyphylla*).
Su Song stated: When Lychee season ends, Longan ripens immediately, so southerners call it "Lychee Slave." It is also called Mudan. Dried and sent far away, northerners consider it a fine fruit and call it Yalizhi.
[Collection of Explanations] *Mingyi Bielu* states: Longan grows in the valleys of Nanhai. Also known as Yizhi. The larger ones resemble Areca nut (*Betel Nut*).
Su Gong stated: The Longan tree resembles the Lychee tree; its leaves are like those of Malus asiatica (Chinese Pear); the flowers are white. The fruit resembles Areca nut, with scaly armor, and is as large as a sparrow's egg.
Su Song stated: Currently, it is found in Fujian, Guangdong, and along the Shu roads where Lychees are produced. Ji Han's *Nanfang Caomu Zhuang* says: The tree is one or two zhang high, resembling Lychee but with smaller branches and leaves, remaining evergreen through winter. In late spring and early summer, it opens small white flowers. In July, the fruit ripens; the shell is yellowish-green with patterns resembling scales, round in shape, as large as a pellet, and the pit resembles that of certain nuts but is not hard. The flesh is thinner than Lychee, white with juice, and sweet as honey. The yield is abundant, with thirty to forty fruits per branch, clustered like grapes. During the Han Dynasty, Nanhai frequently paid tribute with this item, causing great harm to the people. Tang Qiang, Magistrate of Linwu, submitted a memorial describing the situation. Emperor He was moved by his words and issued an edict to stop the tribute.
Li Shizhen stated: Longan is perfectly round; comparing it to Areca nut in *Mingyi Bielu* and Su Gong's commentary is quite inaccurate. The wood fears cold; harvesting can only begin after the White Dew solar term. After sun-drying and baking until dry, the dried clusters are named Longyan Jin. According to Fan Chengda's *Guihai Zhi*, there is a "Mountain Longan" produced in Guangxi, green in color, with flesh like Longan, ripening in summer for consumption. This is likely the wild variety of Longan?
Fruit
[Flavor and Toxicity] Sweet, neutral, non-toxic. Su Gong stated: Sweet, sour, warm. Li Pengfei stated: If consumed raw after blanching in boiling water, it does not damage the Spleen.
[Indications] Treats evil qi in the five zang organs, calms the spirit, and alleviates anorexia. Removes gu poison and expels three types of parasites. Long-term use strengthens the soul and enhances mental clarity, lightens the body, prevents aging, and facilitates spiritual connection (*Shennong Bencao Jing*). Opens the stomach, benefits the Spleen, tonifies deficiency, and enhances intelligence (Li Shizhen).
[Elucidation] Li Shizhen stated: Among foods, Lychee is considered precious, but for nourishing benefits, Longan is superior. This is because Lychee is hot in nature, whereas Longan is neutral and mild. Yan Yonghe's *Jisheng Fang* contains the Guipi Tang (Restore the Spleen Decoction) for treating heart-spleen deficiency caused by overthinking and labor, taking advantage of the principle that sweet flavor enters the Spleen and enhances intelligence.
[Attached Prescriptions] One new prescription.
Guipi Tang (Restore the Spleen Decoction): Treats excessive overthinking, heart-spleen injury from labor, forgetfulness, palpitations and anxiety, empty irritability and insomnia, spontaneous sweating, and fright palpitations. Use Longan Aril, Fried Sour Jujube Seed (*Suanzaoren*), Honey-fried Astragalus Root (*Huangqi*), Baked Atractylodes Rhizome (*Baizhu*), Poria with Hostwood (*Fushen*), each 1 liang; Costus Root (*Muxiang*) and Ginseng Radix et Rhizoma (*Renshen*), each 0.5 liang; Honey-fried Licorice Root (*Zhigancao*), 2.5 qian. Coarsely crush. For each dose...
Pit/Seed
[Indications] Treats bromhidrosis (fox odor). Six pits, ground together with two to seven peppercorns, apply when sweating occurs (Li Shizhen).