多生阴崖险罅处。其叶长者近尺。阔寸余。柔韧如皮。背有黄毛。故名石苇。（濒湖）
味苦平。气微寒。主治劳热邪气。癃闭不通。（本经）止烦下气。通膀胱满。补五劳。
安五脏
捷于影
〔论〕石苇生于石旁。及阴崖险罅。得阴气最专。似于肾气有即补以为通之用。故统治
五淋
结而成
〔修治〕刷去黄毛。免射肺作咳。并宜去梗。微炙用。
有地朕血见愁草血竭血风草诸名。布地而生。细弱蔓延。茎赤。断之有汁。叶青紫色
夏中茂盛。六月开红花。结细实。取苗子用之。又络石亦名地锦。是藤蔓之类。与此同名
物。（禹锡）
气味苦平。主治心气。（平即是辛。火得金气。即能宅水而化血。）通流血脉。亦可治气。
疗
附方 妇人血崩。草血竭嫩者蒸熟。以油盐姜腌食之。饮酒一二杯送下。或阴干为末。
姜酒调服一二钱。即止。血淋。用血风草。井水擂服。三度即愈。
〔论〕地锦蔓延茎赤。叶更青紫。观其夏中茂盛。六月开红花。结细实。而味苦。似得
火化
五六月中。湿地及腐木上卒然而发。紫褐虚浮。弹之尘出。大如斗者。重不过钱
秋采之。
味辛气平。其质轻虚。上焦肺经药也。清肺散血热解毒。治时疫大头痛。及喉痹咽疼。
（去膜。
得。马勃一
吐涎血即
为末。沙
〔论〕马勃本于腐化之气。当五六月火土极盛时。百物化生之气已极。即腐化之气。亦
乘斯
之
〔修治〕以生布张开。将马勃于上摩擦。下以盘承取。末用。
Shiwei (Pyrrosiae Folium) grows mostly in shady cliffs and dangerous crevices. Its leaves are nearly one chi long, over one cun wide, soft and tough like leather, with yellow hairs on the back, hence named Shiwei. (Benhu)
Bitter in taste, neutral in nature, slightly cold in qi. It treats labor-heat and pathogenic qi, strangury with inability to urinate. (Shennong Bencao Jing) It stops irritability, directs rebellious qi downward, unblocks fullness of the Bladder, tonifies the five labors, and calms the five Zang organs.
[Discussion] Shiwei grows beside stones and in shady cliffs and dangerous crevices, obtaining the yin qi most purely. It seems to have an immediate connection with Kidney qi, using tonification as a means for unblocking. Thus, it governs all types of strangury (Lin syndrome).
[Preparation] Brush off the yellow hairs to avoid irritating the lungs and causing coughing. The stems should also be removed. Use after slight roasting.
It has various names such as Di Zhen Xue, Jian Chou Cao, Xue Jie, and Xue Feng Cao. It spreads along the ground, thin and weak, creeping and spreading. The stems are red, exuding juice when broken, and the leaves are greenish-purple. It flourishes in summer, blooms red flowers in the sixth lunar month, and bears small fruits. The seedlings and seeds are used. Additionally, Luan Shi (Trachelospermi Caulis et Folium) is also called Di Jin; it belongs to the vine category but is a different substance sharing the same name. (Yuxi)
The flavor is bitter and neutral. It treats Heart qi. ("Neutral" implies acridity; Fire receiving Metal qi can reside in Water and transform into Blood.) It promotes the flow of blood vessels and can also treat Qi disorders.
Prescription: For uterine bleeding (Xue Beng), steam tender Ca Xue Jie, pickle with salt, oil, ginger, and eat. Take with one or two cups of wine to stop bleeding. Or dry it in the shade, grind into powder, and take one or two qian mixed with ginger wine to stop bleeding immediately. For hematuria (Xue Lin), use Xue Feng Cao, rub with well water, and drink. Three doses will cure it.
[Discussion] Di Jin spreads with red stems and greener purple leaves. Observing its flourishing in summer, blooming red flowers in the sixth month, bearing small fruits, and having a bitter taste, it seems to derive from the transformation of Fire.
In the fifth and sixth lunar months, it suddenly appears on wet soil and rotting wood. It is purplish-brown, hollow and floating; when flicked, dust comes out. Large specimens may be as big as a dou, weighing no more than one qian. Harvest in autumn.
Acrid in taste, neutral in nature. Its substance is light and void; it is a herb for the Upper Jiao Lung Meridian. It clears the Lungs, disperses blood heat, and resolves toxicity. It treats epidemic severe headache and throat obstruction (Hou Bi) with sore throat. (Remove the membrane. Ma Bo alone, ground into powder... spitting saliva and blood...)
[Discussion] Ma Bo originates from the qi of putrefaction. When Fire and Earth are at their peak in the fifth and sixth lunar months, the qi of generation and transformation of all things is at its extreme. At this time, the qi of putrefaction also takes advantage of this momentum...
[Preparation] Spread raw cloth open, rub the Ma Bo on it, and catch the powder in a plate below. Use the powder.