板蓝根经周太炎教授、丁志遵和王铁僧同志的鉴定,系十字花科 lsatis tinc(?)oria L.的根。其形体直长,外面为灰黄色,破折面平坦,白色或黄色,非纤维性,中有一较深颜色的圆圈是其特点。北京中药店以往曾有以蓼蓝的根充板蓝根者,其叶即俗名大青叶,形状与陈存仁所谓的大青叶同。惟京津两地药材公司所售的大青叶皆系蓼蓝叶,天津东郊徐家庄所种的大青叶,据外形观察实系蓼蓝,而板蓝所产的大青叶皆销往上海等地,京津两地不销。据李时珍记载:"蓝凡五种:蓼蓝叶如蓼,五六月开花成穗,细小,浅红色,子亦如蓼。菘蓝叶如白菘(陈存仁谓菘蓝系属十字花科的大青,即 lsatis tinctoria L.的叶,亦正是作者所研究的市售板蓝)。马蓝如苦(?),即郭璞所谓大叶冬蓝,俗中所谓板蓝者。吴蓝长茎如蒿而花白,吴人种之。木蓝长茎如决明,高者三四尺,分枝布叶,叶如槐叶,七月开淡红花,结角长寸许,累累如小豆角,其子亦如马蹄决明子而微小,迥与诸蓝不同,而作淀则一也。苏恭以马蓝为木蓝,苏颂以菘蓝 The identification of Banlangen by Professor Zhou Taiyan, Ding Zhizun, and Wang Tiejun was the root of the cruciferous family lsatis tinc (?)oria L. Its shape is straight, outside is grayish yellow, broken surface is flat, white or yellow, non-fibrous, the circle with a darker color is its characteristic. In the past, Beijing’s pharmacies had filled the roots of indigo with Radix isatidis, and its leaves, commonly known as Daqingye, had the same shape as Chen Cunren’s so-called Daqingye. However, the Daqingye sold by Jingjing and Dadi Medicinal Materials Co., Ltd. are all indigo leaves. The Daqingye planted in Xujiazhuang, an eastern suburb of Tianjin, is indigo according to its appearance. The Daqing leaves produced by Banlan are sold. In Shanghai and other places, Beijing and Tianjin are not sold. According to Li Shizhen’s records: “If there are five kinds of blue plants: Indigo leaves, such as lotus roots, they will bloom in May and June. They will be small, light red, and their children will be similar.” Indigo’s leaves are white. Daqing, the leaf of lsatis tinctoria L., is also the commercially available plate blue studied by the author.) Ma Lan is like a bitter (?), which is Guo Yan’s so-called big leaf winter blue, and the common so-called plate blue. Wu Lanchang Stems such as wormwood and white, Wu kind of species.Wooden blue long stems such as cassia, taller three or four feet, branches and leaves, leaves such as lotus leaves, in July to open the saffron, knot angle long inches, many The Beanie, whose son is also like a horseshoe cassia, is a little different from the blue ones, but it is also used as a lake. Su Gong takes the horse blue as the wood blue and Su Song as the indigo.