• Scientific Name: Trillium tschonoskii Maximowicz
• Ref: Bull. Acad. Imp. Sci. Saint-Pétersbourg. 29: 218. 1884.
• Synonyms: Trillium morii Hayata;
  T. tschonoskii var. himalaicum H. Hara;
  T. tschonoskii f. morii (Hayata) Yamamoto;
  T. tschonoskii var. morii (Hayata) Masamune.
• Chinese Common Name: 延龄草 yan ling cao
• Family: Liliaceae
• Genus: Trillium
• Distribution: Forests, moist places along ravines, shady and rocky places on hillsides; 1000–3200 m. Anhui, Fujian, Gansu, Hubei, Shaanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, Japan, Korea, Myanmar, Sikkim].
• Photo: 04/04/2020, Mt. Tianmu, Zhejiang

 Plants 15--50 cm tall. Rhizome stout, abbreviated. Stems tufted. Leaves sessile, rhombic-orbicular to broadly rhombic, 6--15 × 5--15 cm. Peduncle 1--4 cm. Flowers 3--4 cm wide. Outer tepals green, narrowly ovate to ovate-lanceolate, 1.5--2 cm × 5--9 mm, herbaceous; inner ones white, rarely pale purple, ovate-lanceolate, 1.5--2.2 cm × 4--6(--10) mm. Stamens ca. 2/5 as long as tepals; filaments 4--5 mm; anthers 3--4 mm, with slightly convex connective apically. Ovary conical-ovoid, 7--9 × 5--7 mm; stigma rather thick. Berry black-purple, globose, 1.5--1.8 cm in diam., many seeded. Fl. Apr--Jun, fr. Jul--Aug. 2 n = 20.(Flora of China)