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**Shegan** (Pinyin: Shègān; English: Belamcanda Rhizome, *Belamcanda chinensis*), grows in the valleys and fields of Nanyang, and is now found everywhere. It is also widely planted in people's courtyards. In spring, it produces seedlings two or three chi high; the leaves resemble those of *Zingiber zerumbet* (Manjiang) but are narrower, longer, and spread horizontally, sparse like wing feathers, hence another name "Wuyuan" (Crow/Ibis), referring to its leaves; a flowering stem emerges from among the leaves, resembling *Hemerocallis citrina* (Daylily) but stiffer; it flowers in June with yellow-red petals featuring fine striations; in autumn, it bears capsule-like fruits containing black seeds; the root system has many fibrous roots, with yellow-black skin and yellowish-red flesh. The roots are harvested on the third day of the third lunar month and dried in the shade. Tao Hongjing stated that formulas for treating toxic swellings often write the name as "Yegan" (Night Dry). Currently, "She" is also pronounced "Ye". He further stated there is another type of Shegan, similar in appearance but with white flowers and long stems, resembling an archer holding a pole. Thus, Ruan Ji's poem says, "Shegan overlooks the layered city," referring to this. This variety is not used in medicine. Su Gong stated that this description refers to *Iris tectorum* (Oryzopsis/Iris), whose leaves are identical to Shegan, but the flowers are purple-blue, it does not produce tall stems, and the root resembles *Alpinia officinarum* (Gao Liang Jiang) but with white flesh; the root is the Iris head. Furthermore, consulting *Xunzi*, it states: "In the west there is a tree named Shegan, its stem four cun long, growing atop high mountains overlooking abysses hundreds of ren deep. Its stem is not inherently long, but rather its position makes it so." Yang Xiong's commentary notes: "It should be a herb, calling it a tree is an error." Observing the current form of Shegan, its stem is slender and long, exactly like a long pole, which explains its name. Tao Hongjing's doubt regarding the pronunciation "Ye" is unnecessary, as ancient pronunciations were often interchangeable; for instance, in the Han dynasty official title "Pushé" (Vice Minister), "She" is also pronounced "Ye" without distinct semantic difference. Additionally, Shegan often grows between mountain cliffs; although its stem is slender, it resembles a woody stalk. Hence *Xunzi* calls it a tree. Su Song argues that Tao's description actually refers to *Iris*. *Iris* flowers are not white; the white-flowered ones belong to the Shegan category, not Iris. *Iris* grows flat on the ground, with broader, flatter leaves than Shegan. Su Song noted that the one with purple-blue flowers and roots resembling *Alpinia* is indeed *Iris*. The *Shennong Bencao Jing* states it grows in the valleys of Jiyi Mountain and is now found everywhere, resembling *Zingiber zerumbet*. It is harvested in March. Another account states: harvest the roots in September or October and dry them in the sun.