1. The leaves of Taxus cuspidata are slightly falcate, dense, and the midvein is raised. The two sides of the base are nearly symmetrical. The seeds are ovoid or triangular ovoid, with 3-4 or more blunt ridges on the upper part. The hilum is usually triangular or square.
2. The small branches attached to the leaves of Taxus yunnanensis are irregular and alternate, and flat when growing. The leaf tip is slowly sharp or sharply sharp and the tip is fuzzy. It is distributed in southwest Sichuan, southeast Tibet, western Yunnan, Bhutan and northern India.
3. Taxus Media is a hybrid of Taxus brevifolia and Taxus cuspidata, and it is the preferred variety recommended by the US Food and Drug Administration for extracting taxol. Now it has been widely cultivated.
4. The leaves of Taxus himalayana are generally straight, the midvein is off axis evenly and densely distributed with papillae, the base is generally symmetrical, the seeds are long columnar, the length is equal to the width, the two ends are blunt ridges, the nucleus is oval, and generally grows in mixed forests and masson pine forests on shady slopes.