（本经下品）
【气味】苦，微寒，有毒。
【主治】主腹中邪热气，诸毒，杀三虫。
【核】曰∶出玄山山谷，及冤句少室山，今陕西、河东州郡，及荆、襄间多有之。生山
阴近水处。冬夏不死，数根丛生，每根必有多茎贯之，茎作三棱如蕨状，有黑色汁，颇涎滑
也。其叶两两对生，如鸡翎，及凤尾，又似狗脊叶而无锯齿，色青黄，面深背淡。四月花白，
七月实黑，相聚连卷，而 生其根，曲而有尖嘴，黑须丛族，亦似狗脊根状，及伏鸱，皮黑
肉赤，直而多枝，若百头也。 菌、赤小豆为之使，伏石钟乳。
先人云∶百头而以一贯，故名贯众。连卷有夏脉如钩之象，是心物无疑矣。腹中邪热，
是夏气在脏之病，从血脉流入心腹之部者，当须此品。
【 】曰∶根具百头，独茎叶两两相对，若偶贯群阴也，因名贯众。多生山阴近水处，
故禀苦寒气味，对待阳不贯阴而成邪热，理不贯经而成诸毒。生阳不贯四大而成三虫，亦地
以阳杀阴藏之象欤。
（既连卷有夏脉如钩之象，则百头一贯，有心主百脉宗主之象矣。假以治百合病者颇象
形百合病者，百脉一宗悉致其病故也。）
（本经下品）
【气味】苦平，无毒。
【主治】主痈肿恶疮败疽，伤阴，死肌，胃中邪气，贼风，鬼击，痱缓不收。
【核】曰∶出北山山谷，及冤句、越山，江淮、河、陕、汉、黔诸州。春生苗，长尺许。
叶如初生棕苗，及藜芦，两指许大，色青翠。三、四月叶中出条，开紫花，宛如草兰，即箬
兰也。结黄黑实，根色白，似菱，有三角，角头生芽，节间有毛，质极粘腻，可作糊也。紫
石英为之使，恶理石，畏李核仁、杏核仁，反乌头。
【 】曰∶白，金；及，至也。金至斯坚，故主痈肿疮疽，死肌痱缓，不但坚形，亦可
坚脏
（杭郡狱中，有犯大辟者，生肺痈，脓成欲死，得单方服白及末，遂获生全，越十年临
刑，其肺已损三叶，所损处，皆白及末填补，其间形色，犹未变也。）
（记载于《神农本草经》下品）
【气味】味苦，性微寒，有毒。
【主治】主治腹中邪热之气，各种毒邪，能杀灭三虫（寄生虫）。
【考证】曰：产于玄山山谷，以及冤句、少室山，如今陕西、河东各州郡，以及荆州、襄阳之间多有生长。生于山北背阴且靠近水源的地方。冬夏不枯萎，数根丛生在一起，每根必定有多茎贯穿其中，茎呈三棱形，状如蕨类植物，有黑色汁液，颇为黏滑。其叶片两两对生，形状像鸡翎，又像凤尾，又类似狗脊的叶子但没有锯齿，颜色青黄，正面深背面浅。四月开白花，七月结黑色果实，果实聚集相连卷曲，从根部生出，弯曲且有尖嘴，黑须丛生簇拥，也类似狗脊的根状，以及伏鸱（一种植物），外皮黑色肉质红色，直立且多分枝，若百头（指根众多）一般。菌（白菌）和赤小豆作为它的引药，可以克制石钟乳。
先父说：百个头而由一根贯穿，所以名叫贯众。连卷（指果实或形态）具有夏季脉象如钩的形象，这无疑是心之物的象征。腹中的邪热，是夏季之气在脏腑产生的疾病，从血脉流入心腹部位者，应当需要这种药物。
【考证】曰：根部具备百个头，独茎与叶片两两相对，好像偶合贯穿群阴，因此命名为贯众。多生长在山的北面靠近水的地方，所以禀受了苦寒的气味，用来对待阳气不贯通阴气而形成的邪热，调理不能贯通经络而形成的各种毒邪。生于阳面而不能贯通“四大”（地水火风）而形成三虫，这也是大地以阳气杀灭阴气收藏的象征吧。（既然连卷有夏季脉象如钩的形象，那么百头一贯，就有心脏主宰百脉宗主形象的意味了。借它来治疗百合病，颇似取象比类，因为百合病患者百脉一宗悉致其病。）
（记载于《神农本草经》下品）
【气味】味苦，性平，无毒。
【主治】主治痈肿恶疮、败疽，损伤阴分，死肌，胃中邪气，贼风，鬼击（突发性剧烈疼痛或外伤），痱缓不收（肢体痿废弛缓不能收摄）。
【考证】曰：产于北山山谷，以及冤句、越山，江淮、黄河、陕西、汉水、黔中等州。春天生苗，长约一尺左右。叶子像初生的棕树幼苗，又像藜芦，宽约两指，颜色青翠。三、四月间叶中抽出花条，开出紫色花朵，宛如草兰，也就是箬兰。结黄黑色的果实，根部颜色白色，形状像菱角，有三个角，角头生芽，节间有毛，质地非常黏腻，可以制作成糊状。紫石英作为它的引药，厌恶理石，畏惧李核仁、杏核仁，与乌头相反。
【考证】曰：白，属金；及，意为至。金气至此变得坚固，所以主治痈肿疮疽、死肌、痱缓，不仅能坚固形体，也可以坚固内脏。
（杭州郡的监狱中，有一个被判死刑的人，生了肺痈，脓液形成快要死亡时，得到单方服用白及粉末，于是得以保全性命。过了十年临刑时，他的肺已经损坏了三叶，所损坏的地方，都用白及粉末填补，其中的颜色和形状，还没有改变。）
(Recorded in the Lower Category of *Shennong Bencao Jing*)
【Flavor and Nature】Bitter, slightly cold, toxic.
【Indications】Mainly treats evil heat qi in the abdomen, various toxins, and kills three types of parasites (San Chong).
【Verification】It is said: It grows in the valleys of Xuan Mountain, as well as Yuanju and Shaoshi Mountain. Currently, it is abundant in the prefectures and commanderies of Shaanxi, Hedong, and between Jingzhou and Xiangyang. It grows in shady mountain areas near water sources. It does not wither in winter or summer. Several roots grow in clusters, each root having multiple stems penetrating through them. The stems are triangular in cross-section, resembling ferns, containing black juice that is quite viscous and slippery. The leaves grow opposite each other in pairs, resembling chicken feathers or phoenix tails, and also similar to the leaves of * Cibotium barometz* (Gouji) but without serrated edges. The color is yellowish-green, darker on the upper surface and lighter on the lower surface. In April, it bears white flowers; in July, it produces black fruits. The fruits gather and curl together, growing from the root. The root is curved with a pointed tip, surrounded by dense black rhizomes, resembling the root of *Cibotium barometz* or Fuchi (a type of plant). The bark is black, and the flesh is red. It stands upright with many branches, resembling "Baitou" (hundred heads). *Jun* (white mushroom) and *Chi Xiaodou* (Adzuki Bean) serve as its guiding herbs, and it can counteract *Shi Zhongru* (Stalactite).
My late father said: Since the hundred heads are penetrated by a single stem, it is named Guanzhong (Penetrating Many). The curled form resembles the image of the summer pulse like a hook, undoubtedly symbolizing the Heart organ. Evil heat in the abdomen is a disease caused by summer qi affecting the zang organs, flowing from the blood vessels into the heart and abdominal regions; such cases require this herb.
【Verification】It is said: The root possesses a hundred heads, while the solitary stem and leaves grow in opposite pairs, seemingly coupling and penetrating the yin aspects, hence the name Guanzhong. It grows abundantly in shady, moist mountain areas, thus inheriting bitter and cold properties. It counters evil heat formed when yang fails to penetrate yin, and regulates various toxins formed when meridians fail to connect. Its growth in yang-exposed areas failing to penetrate the "Four Elements" leads to the formation of three parasites, which may also reflect the imagery of earth using yang qi to kill and store yin. (Since the curled form resembles the summer pulse like a hook, the single stem penetrating the hundred heads symbolizes the Heart's role as the master of all vessels. Borrowing its shape to treat Baihe Bing [Lily Disease] is quite apt, as Baihe Bing involves all vessels originating from one source becoming diseased.)
(Recorded in the Lower Category of *Shennong Bencao Jing*)
【Flavor and Nature】Bitter, neutral, non-toxic.
【Indications】Mainly treats carbuncles, swelling, malignant sores, necrotic ulcers, damage to yin, dead muscle, evil qi in the stomach, thief wind, Guiji (sudden severe pain or trauma), and feihuan bu shou (flaccid paralysis where limbs cannot be controlled).
【Verification】It is said: It grows in the valleys of Northern Mountains, as well as Yuanju and Yue Mountain, across various prefectures including Jianghuai, Yellow River, Shaanxi, Han River, and Qian. Sprouts emerge in spring, growing about one chi long. The leaves resemble young palm shoots or *Veratrum nigrum* (Lilu), about two fingers wide, with a fresh green color. In March and April, flower stalks emerge from the leaves, opening purple flowers that resemble grass orchids, specifically Ruolan. It bears yellow-black seeds. The root is white, shaped like a water caltrop with three angles, sprouting buds at the tips of the angles. There are hairs between the nodes, and the texture is extremely sticky, capable of being made into paste. *Zi Yanshi* (Purple Quartz) serves as its guiding herb. It is incompatible with *Lishi* (Chlorite), fears *Li Heren* (Apricot Kernel) and *Xing Heren* (Almond Kernel), and is contrary to *Wutou* (Aconite Root).
【Verification】White corresponds to Metal; "Ji" means arrival. When Metal arrives, it becomes firm. Therefore, it mainly treats carbuncles, sores, necrotic ulcers, dead muscle, and flaccid paralysis. It not only firms the body structure but also strengthens the internal organs.
(In the prisons of Hangzhou, there was a prisoner sentenced to death who developed Feiyong [Lung Abscess]. When pus formed and he was near death, he took a single prescription of Baiji powder and survived. Ten years later, upon execution, his lungs had lost three lobes. The damaged areas were filled with Baiji powder, and the color and texture remained unchanged.)