（《别录》）
时珍曰∶此指茎叶也。
【气味】辛，有毒。
【主治】恶疮，去痹气（《别录》）。根茎∶除恶疮肿，水气香港脚，煮浓汁渍之（苏颂）。
【附方】新一。
生肌肉 水荭花根，煎汤淋洗，仍以其叶晒干研末，撒疮上，每日一次。（《谈野翁试验方
》）
（《拾遗》）
【集解】藏器曰∶毛蓼生山足，似马蓼，叶上有毛，冬根不死。
时珍曰∶此即蓼之生于山麓者，非泽隰之蓼也。
茎叶
【气味】辛，温，有毒。
【主治】痈肿疽 瘰 ，杵碎纳疮中，引脓血，生肌。亦作汤，洗疮，兼濯足，治香港脚
（藏器）。
（《拾遗》）
【集解】藏器曰∶生会稽海畔山谷，茎赤，叶似马蓼，根似菝 而小，胡人蒸而用之也。
根
【气味】苦，小温，无毒。
【主治】霍乱中恶心腹痛，鬼气疰忤飞尸，喉痹蛊毒，痈疽恶肿，赤白游疹，蛇咬犬毒。
酒及水磨服，并敷之（藏器）。
（宋《图经》）
【集解】颂曰∶生南恩州原野中。茎赤而柔，似细蓼。叶端尖，近梗形方。夏有白花。
秋实如菽，青黑色，叶甘可食。
叶
【气味】酸，平，有毒。
【主治】去皮肤风热，流注骨节，痈肿疼痛。不拘时采，于 器中捣烂，以盐酒炒，敷
肿痛处，经宿一易之（苏颂）。
(From *Bie Lu* [Supplement to the Materia Medica])
Li Shizhen stated: This refers to its stems and leaves.
[Flavor and Properties] Acrid, toxic.
[Indications] Malignant sores, dispelling Bi syndrome (from *Bie Lu*). Roots and rhizomes: Eliminate malignant sores with swelling, edema, and Hongjiao (Hong Kong foot / gouty arthritis), boil into a concentrated decoction for soaking (recorded by Su Song).
[Attached Prescriptions] One new prescription.
Promote tissue regeneration: Decoct roots of *Polygonum orientale* (Shuihonghua) for washing/rinsing; still use its leaves dried and ground into powder, sprinkled on the sore, once daily. (From *Tan Ye Weng Shi Yan Fang* [Experimental Formulas by Tan Yeweng])
(From *Shi Yi* [Supplement to Materia Medica])
[Collection and Explanation] Zang Qi said: Maoli (Hairy Knotweed) grows at the foot of mountains, resembling Maoli (Knotweed), with hairs on the leaves, and the roots do not die in winter.
Li Shizhen said: This is the Polygonaceae growing at the mountain foothills, not the Polygonaceae growing in marshes or low wetlands.
Stems and Leaves
[Flavor and Properties] Acrid, warm, toxic.
[Indications] Carbuncles, ulcers, scrofula, crush and insert into the sore to draw out pus and blood, promote tissue regeneration. Also made into a decoction to wash sores, and to wash feet, treating Hongjiao (Hong Kong foot / gouty arthritis) (recorded by Zang Qi).
(From *Shi Yi* [Supplement to Materia Medica])
[Collection and Explanation] Zang Qi said: Grows in valleys by the sea in Kuaiji, stems are red, leaves resemble Maoli (Knotweed), roots resemble Smilax glabra (Baqia) but smaller, Hu people steam and use it.
Roots
[Flavor and Properties] Bitter, slightly warm, non-toxic.
[Indications] Cholera with nausea and abdominal pain, Guiqi Zhuwu Feishi (ghost qi, fixed evil, flying corpse [terms referring to certain infectious or psychosomatic diseases]), throat obstruction, gu poison, carbuncles and malignant swellings, erysipelas (Chi Bai You Zhen), snake bites, and dog venom. Grind with wine and water for oral administration, and apply externally (recorded by Zang Qi).
(From Song Dynasty *Tu Jing* [Illustrated Pharmacopoeia])
[Collection and Explanation] Song said: Grows in the fields of Nan'en Prefecture. Stems are red and soft, resembling fine Polygonaceae. Leaf tips are sharp, square-shaped near the petiole. White flowers in summer. Fruits like soybeans in autumn, dark green-black, leaves are sweet and edible.
Leaves
[Flavor and Properties] Sour, neutral, toxic.
[Indications] Dispel wind-heat from the skin, prevent migration to joints, treat carbuncles and swelling with pain. Harvest at any time, pound in a tile vessel until pasted, stir-fry with salt and wine, apply to swollen and painful areas, change once after overnight (recorded by Su Song).