（《拾遗》）
【释名、集解】 曰∶越王余算生南海水中，如竹算子，长尺许。刘敬叔《异苑》云∶
昔晋安越王渡南海，将黑角白骨作算筹，其有余者，弃于水中而生此。故叶白者似骨，黑者
似角，遂名之。相传可食。
【气味】咸，温，无毒。
【主治】水肿浮气结聚，宿滞不消，腹中虚鸣，并煮服之（李 ）。
【附录】沙箸
时珍曰∶按∶刘恂《岭表录》异有沙箸，似是余算之类，今附于此。云∶海岸沙中生沙
箸，春吐苗，其心若骨，白而且劲，可为酒筹。凡欲采者，须轻步向前拔之。不然，闻行声
遽缩入沙中，不可得也。
（《日华》）
【集解】弘景曰∶石帆状如柏，水松状如松。
藏器曰∶石帆生海底，高尺余。根如漆色，至梢上渐软，作交罗纹。
大明曰∶石帆紫色，梗大者如箸，见风渐硬，色如漆，人以饰作珊瑚装。
颂曰∶左思《吴都赋》∶草则石帆、水松。刘渊林注云∶石帆生海屿石上，草类也。无
叶，高尺许，其花离楼相贯连。若死则浮水中，人于海边得之，稀有见其生者。
【气味】甜、咸，平，无毒。
【主治】石淋（弘景）。煮汁服，主妇人血结月闭（藏器）。
（《纲目》）
【集解】弘景曰∶水松状如松。
颂曰∶出南海及交趾，生海水中。
【气味】甘、咸，寒，无毒。
【主治】溪毒（弘景）。水肿，催生（藏器）。
（出自《本草拾遗》）
【释名、集解】 李曰：越王余算生长于南海之中，形状像竹制的算筹，长约一尺左右。刘敬叔在《异苑》中说：从前晋安越王渡过南海时，曾用黑角和白骨制作算筹，剩下的部分被丢弃在水中，从而长成了这种植物。因此，白色的部分像骨头，黑色的部分像角，所以得名。相传可以食用。
【气味】 味咸，性温，无毒。
【主治】 水肿、浮气结聚、宿食停滞不消、腹中虚鸣，均煮汤服用（李）。
【附录】 沙箸
李时珍说：据刘恂《岭表录》记载，有一种名为“沙箸”的奇异植物，看起来像是余算一类，现附记于此。书中说：海岸沙滩中生长着沙箸，春天抽出苗，其中心质地像骨头一样，白色且坚硬，可用作酒筹。凡是想要采集的人，必须轻手轻脚地靠近并拔取它。否则，一旦听到脚步声，它就会迅速缩入沙中，无法采得。
（出自《日华子本草》）
【集解】 陶弘景说：石帆的形状像柏树，水松的形状像松树。
陈藏器说：石帆生长在海底，高约一尺多。根部颜色如漆，到了梢头逐渐变软，呈现出交错纵横的纹理。
大明说：石帆呈紫色，粗大的茎像筷子一样，见风后逐渐变硬，颜色如漆，人们用它装饰成珊瑚的样子。
苏颂说：左思《吴都赋》中提到：“草本植物中有石帆、水松。”刘渊林注释说：石帆生长在海上岛屿的石头上，属于草类。没有叶子，高约一尺，花朵错落有致，相互连接。如果死亡则漂浮在水中，人们在海边捡拾到它，很少见到活着的植株。
【气味】 味甘、咸，性平，无毒。
【主治】 石淋（陶弘景）。煮汁服用，主治妇女血结、月经闭止（陈藏器）。
（出自《本草纲目》）
【集解】 陶弘景说：水松的形状像松树。
苏颂说：产于南海及交趾地区，生长在海水中。
【气味】 味甘、咸，性寒，无毒。
(From *Bencao Shiyi* [Supplement to Materia Medica])
[Names and Explanation] Li states: Yuewang Yusuan grows in the South Sea, resembling bamboo counting rods (suanzi), approximately one chi in length. Liu Jingshu's *Yi Yuan* records: "In ancient times, when the King of Yue from Jin'an crossed the South Sea, he used black horn and white bone to make counting rods. The surplus pieces were discarded into the water and grew into this plant. Hence, the white parts resemble bone, and the black parts resemble horn, thus giving it its name. It is said to be edible."
[Properties and Flavor] Salty, warm, non-toxic.
[Indications] Edema, accumulation of floating qi, stagnation of old food not digesting, and hollow sounds in the abdomen; all treated by boiling and drinking the decoction (Li).
[Appendix] Shazhu (Sand Chopsticks)
Shizhen says: According to Liu Xun's *Lingbiao Lu*, there is a strange plant called Shazhu, which appears similar to Yuesuan, so it is appended here. It states: "Shazhu grows in the sand on the coast, sprouting shoots in spring. Its core resembles bone, being white and tough, suitable for use as wine counters. To harvest it, one must approach lightly and pull it out. Otherwise, upon hearing footsteps, it will quickly retract into the sand, making it impossible to obtain."
(From *Rihua Bencao*)
[Explanation] Hongjing states: Shifan resembles cypress; Shuisong resembles pine.
Cangqi states: Shifan grows at the bottom of the sea, over one chi high. The roots are lacquer-colored, becoming softer towards the tips, forming an interlaced pattern.
Daming states: Shifan is purple; thick stems are like chopsticks, hardening upon exposure to wind, with a color like lacquer. People use it to decorate imitations of coral.
Song states: Zuo Si's *Wu Du Fu* mentions: "Among grasses, there are Shifan and Shuisong." Liu Yuanlin's annotation says: "Shifan grows on rocks in sea islands, belonging to the grass category. It has no leaves, stands about one chi high, and its flowers are intricately intertwined. If dead, it floats in the water. People find it on the seashore; few have seen it growing alive."
[Properties and Flavor] Sweet, salty, neutral, non-toxic.
[Indications] Shilin (Stone strangury) (Hongjing). Boiled juice treats blood stasis and amenorrhea in women (Cangqi).
(From *Bencao Gangmu*)
[Explanation] Hongjing states: Shuisong resembles pine.
Song states: Produced in the South Sea and Jiaozhi, growing in seawater.
[Properties and Flavor] Sweet, salty, cold, non-toxic.
[Indications] Xidu (Stream toxicity) (Hongjing). Edema, promoting childbirth (Cangqi).