杨花所化生。止水中一叶。经宿即生九叶。叶下微须。即其根也。
气味辛寒。主治暴热身痒。热毒风热热狂。肿毒。发时行热病汗。并疗风湿麻痹香港脚。
捣汁
轻浮
出之蕃茂
水之相滋。
用紫背浮萍
利。浮萍晒干
背浮萍焙半两。黄 炙二钱半
等分。为末。人乳和丸。梧子大
牛蒡子酒煮晒干炒。各一两。
〔论〕杨花入水而化萍。禀寒水之旺气。乘风木之出机。故其生也易。而化亦繁。即其
味以
合于人
焉。阴
缪氏云。表气虚而自汗者。勿用。
〔修治〕紫背者入药良。面背皆绿者。不可用。七月采之。拣净。摊竹筛中。下置水一
盆映
即水藻。生于海中者有二种。马尾藻生浅水中。如短马尾。细黑色。大叶藻生深
叶如水藻而大。海人以绳系腰。没水取之。作海菜货远。
苦咸而寒。气味俱浓。纯阴。沉也。反甘草。主瘿瘤结气。散颈下硬核痛。痈肿症瘕坚
气
卵肿。
多食良
与甘草本相反
海藻酒。海藻一
尽再作。其渣晒
〔论〕海藻散结破坚。总由能达阴中之气。夫至阴之气。水化出焉。故本经更下十二水
肿。
化湿
〔修治〕洗净咸味。焙干用。
一名纶（音关）布。生登莱者。搓如绳索之状。出闽浙者。大叶似菜。（濒湖）。
气味咸酸寒滑。下气。治十二种水肿。瘿瘤结聚气。（瘿结如石者非此不除）疗 疮。
及阴 肿。利水道。去面肿。久服瘦人。昆布 。治膀胱结气。用高丽昆布一斤。米泔浸一
宿。洗去咸味。以水一斛煮熟。劈细。入葱白一握。寸断之。更煮极烂。乃下盐醋糁姜橘椒
末调和食之。仍宜食粱米粳米饭。极能下气。无所忌。海藻亦可。依法作之。
〔修治〕东流水煮半日。去咸味。焙干。
〔总论〕寒润下。咸软坚。独取海藻昆布二物。因其与水浮沉之性。从上而下。以致流
湿之
散
所
治
缪氏。二物脾家有湿者。弗服。
杨花落入水中所化生。仅浮于水面的一片叶子，经过一夜就会生出九片叶子。叶片下方有细微的须状物，这就是它的根。
气味辛、寒。主治突然发作的身热瘙痒、热毒、风热、热狂、肿毒。治疗时行热病出汗，并疗治风湿麻痹和香港脚（足部肿痛）。
捣取汁液服用。
药性轻浮。
生长繁殖茂盛。
依靠水的滋养而生长。
使用紫背浮萍。
各等分，研为细末，用人乳调和制成丸剂，大小如梧桐子。
牛蒡子用酒煮后晒干炒制，各一两。
〔论述〕杨花落入水中化为浮萍，禀受了寒水旺盛之气，乘着春木生发之机，所以它生长容易，繁衍也繁盛。从它的味道来看，可以合于人体的……阴气。
〔修治〕紫背色的入药效果好，正面背面都是绿色的，不可使用。七月采集，拣选干净，摊在竹筛中，下面放置一盆水映照。
即水藻。生长在海水中的有两种。马尾藻生长在浅水中，像短马尾一样，细小黑色。大叶藻生长在深水中，叶子像水藻但更大。海边人用绳子系在腰上，潜水去采集它们，作为海菜运往远处售卖。
味道苦、咸，性寒。气味都很浓烈。属于纯阴之品，质地下沉。与甘草相反。主治瘿瘤结气，消散颈部硬核疼痛，痈肿症瘕坚硬之气，睾丸肿胀。
多吃有益。
与甘草本来相反。
〔论述〕海藻能散结破坚，总归是因为它能通达阴中之气。极阴之气，由水化生而出。所以《本经》记载它能消除十二种水肿。
化湿。
〔修治〕洗净咸味，焙干后使用。
又名纶布。生长在登州、莱州地区的，搓成绳索的形状。出产于福建、浙江地区的，叶子大像蔬菜。（李时珍语）。
味道咸、酸，性寒滑。下气。治疗十二种水肿、瘿瘤结聚之气。（瘿核像石头一样硬的，不用此药不能去除）。治疗疮疡及阴部肿胀。通利水道，去除面部浮肿。长期服用使人消瘦。昆布。治疗膀胱结气。使用高丽昆布一斤，用米泔水浸泡一晚，洗去咸味，用水一斛煮熟，劈碎，加入一把葱白，切成寸段，再煮至极烂，然后放入盐、醋、糁姜、橘皮、花椒末调和食用。仍然适宜吃粱米、粳米饭。极能下气，没有禁忌。海藻也可以，依法制作。
〔修治〕用东流水煮半天，去掉咸味，焙干。
It is generated from willow catkins falling into water. Initially, only a single leaf floats on the surface. After one night, nine more leaves sprout. Fine root-like filaments appear beneath the leaves, which constitute its roots.
The flavor is pungent and the nature is cold. It primarily treats sudden-onset fever with pruritus, heat-toxin, wind-heat, manic delirium due to heat, swelling and toxicity. It induces sweating in epidemic febrile diseases and treats rheumatic numbness/paralysis and Hong Kong foot (podagra/swelling of the feet).
Crush and extract the juice for administration.
The medicinal property is light and floating.
It grows luxuriantly.
It thrives through the nourishment of water.
Use *Zi Bei Fu Ping* (Purple-backed Duckweed).
It promotes diuresis. Use dried duckweed.
Roast half an *liang* of purple-backed duckweed and two-and-a-half *qian* of processed *Huang Qin* (Scutellariae Radix).
Mix equal parts, grind into fine powder, and form pills using human milk, sized like wu-tong seeds.
Boil *Niu Bang Zi* (Arctii Fructus) in wine, dry, and stir-fry; use one *liang* each.
[Discussion] Willow catkins fall into water and transform into duckweed. They inherit the vigorous qi of cold-water and ride the emerging mechanism of spring-wood. Thus, their growth is easy, and their proliferation is abundant. Based on its flavor, it corresponds to... yin [qi] in humans.
Miao stated: Those with deficient exterior qi presenting with spontaneous sweating should not use it.
[Processing] Purple-backed varieties are superior for medicinal use. Those that are green on both surfaces are unusable. Harvest in the seventh lunar month, select cleanly, spread on bamboo sieves, and place a basin of water underneath to reflect light.
This refers to seaweed. There are two types growing in the sea. *Ma Wei Zao* (Sargassum) grows in shallow water, resembling short horse tails, thin and black. *Da Ye Zao* (Alaria esculenta or similar large-leaf species) grows in deep water, with leaves larger than typical seaweed. Coastal people tie ropes around their waists, dive to harvest them, and sell them as marine vegetables over long distances.
The flavor is bitter and salty, and the nature is cold. The aroma and taste are strong. It belongs to pure yin and sinks. It is incompatible with *Gan Cao* (Licorice Root). It treats goiter and nodular qi accumulation, dissipates hard painful lumps under the neck, abscesses, masses, hardness of qi, and testicular swelling.
Consuming it in moderation is beneficial.
It is inherently incompatible with *Gan Cao*.
Seaweed Wine: Take one portion of seaweed... drink until finished, then prepare again. Dry the dregs.
[Discussion] Seaweed dissipates nodules and breaks hardness, primarily because it can penetrate the qi within yin. The qi of extreme yin emerges from water transformation. Therefore, the *Shen Nong Ben Cao Jing* records its ability to reduce twelve types of edema.
It transforms dampness.
[Processing] Wash away the salty taste and roast until dry before use.
Also known as *Lun Bu*. Those produced in Dengzhou and Laizhou are twisted into rope-like shapes. Those from Fujian and Zhejiang have large leaves resembling vegetables (as noted by Li Shizhen).
The flavor is salty and sour, the nature is cold and slippery. It directs qi downward. It treats twelve types of edema and goiter with nodular qi accumulation. (For goiters hard as stone, this herb alone cannot remove them). It treats sores and genital swelling. It promotes urination and reduces facial edema. Long-term consumption leads to weight loss. *Kun Bu* (Laminariae Thallus) treats bladder qi stagnation. Take one *jin* of Korean *Kun Bu*, soak overnight in rice wash water, wash to remove saltiness, boil in one *hu* of water until cooked, cut into pieces, add a handful of chopped scallion whites, cook until extremely soft, then mix with salt, vinegar, ginger powder, tangerine peel, and Sichuan pepper powder. Consume while eating millet or japonica rice. It strongly directs qi downward and has no dietary restrictions. Seaweed may also be used following the same method.
[Processing] Boil in flowing water from the east for half a day, remove saltiness, and roast until dry.
[General Discussion] Cold moistens and descends; salty softens hardness. Specifically selecting seaweed and *Kun Bu* utilizes their nature of floating and sinking with water, moving from top to bottom, to achieve the flow of dampness and dissipation...
Miao stated: Those with dampness in the spleen/stomach should not take these two herbs.