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Wild Langdu (Stellera chamaejasme), grows in the valleys of Qinting and Fenggao. Currently, it is also found in various prefectures of Shaanxi, as well as Liao Prefecture and Shizhou. Its seedlings and leaves resemble those of Phytolaccae Radix (Phytolacca acinosa) and Rheum Palmatum (Rhubarb); the stems and leaves have hairs; flowers bloom in April, and fruits mature in August; the root bark is yellow, while the internal flesh is white. The roots are harvested in February and August and dried in the shade. Those that are aged and sink in water are considered superior. Ge Hong treated conditions characterized by continuous distending pain connecting the heart and abdomen using two liang of Wild Langdu and half a liang of Aconiti Lateralis Radix Praeparata (Prepared Side Root of Chinese Monkshood). These were pounded, sifted, and formed into honey pills the size of Torreya seeds. On the first day, one pill was taken; on the second day, two pills; on the third day, three pills. Then one more pill was taken, and on the sixth day, three pills again; taking them continuously from the first to the third day would result in recovery. *Qianjin Fang* treats malignant diseases by mixing equal parts of Wild Langdu and Gentianae Macrophyllae Radix (Gentian Root), pounding them into powder, and administering one fangcun bi (a square-inch measure) with wine twice daily for continued use, leading to recovery.

Guibai (Podophyllum emodi), grows in the valleys of Jiuzhen and Yuanju. Currently, it is also distributed in Jiangning Prefecture, Chuzhou, Shuzhou, Shangzhou, Qizhou, Hangzhou, Xiangzhou, Xiastate, and Jingmen Jun, mostly growing in the shady areas of deep mountains and rocks. The leaves resemble those of Ricinus Communis (Castor Bean) and Paris Polyphylla (Seven-leaf One-flower); initially, there is only one stem with a single leaf at the tip, though some may bifurcate. Each year, a new stem grows, and when the old stem withers, it forms one "mortar" (a corm-like node); after twenty years, there will be twenty mortars. Flowers grow between the stems, are reddish, bloom in March, and bear fruit afterward. The root flesh, bark, and fibrous roots resemble Belamcandae Rhizoma (Blackberry Lily Rhizome), but folk usage often confuses it with Belamcandae Rhizoma, so careful distinction is necessary. The roots are harvested in July and August and sun-dried for use. Ancient prescriptions used it for treating Five Corpse Diseases, Gui Zhu (Ghost Attachment), Hundred Toxins, and Evil Qi. Another account states that Guibai grows in the shady places of deep mountains, with leaves having six or five lobes, resembling goose feet. The single leaf at the stem tip resembles an umbrella canopy, facing east in the morning and tilting west by evening, likely following the sunrise and sunset. The flowers are red-purple like lychee, located beneath the leaves, often obscured by them, rarely seeing sunlight. It produces one leaf per year; once withered, it becomes one mortar. By eight or nine years, there are eight or nine mortars. However, each year a new mortar grows while the old one rots, representing the exchange of old and new, hence the folk name "Mother-Harming Grass." This is similar for Colocasia Esculenta Corms (Taro) and Aconiti Radix (Monkshood Root). When new shoots emerge, the old shoots die, and the corms from the previous year rot. Although herbal commentaries state it looks entirely like Belamcandae Rhizoma, although the body shape of modern Belamcandae Rhizoma is similar, its mortar shape is shallow and thin, greatly differing from Guibai. Guibai resembles the side-by-side overlapping of Tian Nan Xing (Arisaema Consanguineum) from eight or nine years, and its color and texture indeed resemble Belamcandae Rhizoma. Crucially, one must seek out plants with seedlings for harvesting, as they are no longer available in markets.