• Scientific Name: Tongoloa silaifolia (H.Boissieu) H.Wolff
• Ref: Notizbl. Bot. Gart. Berlin-Dahlem. 9:280. 1925
• Synonym: Pimpinella fortunatii H.Boissieu
• Chinese Common Name: 城口东谷芹 Chéngkǒu dōnggǔ∙qín, 城口东俄芹 Chéngkǒu dōng’é∙qín
• Family: Apiaceae
• Genus: Tongoloa
• Distribution: Damp grasslands; 2200–4000 m. Chongqing, Qinghai, Shaanxi, Sichuan, Yunnan.
• Photo: 07/21/2011, Mt. Taibai, Qinling

Plants 28–60 cm. Root brown, conic. Stem purplish, branched. Basal and lower petioles 6–12 cm, sheaths oblong-inflated; blade broadly ovate, (3–)5–8 × (2–)4–6 cm, 2–3-ternate/pinnate; pinnae short petiolulate; ultimate segments linear, 5–18 × 1–2 mm, apex acute. Primary umbels 3–12 cm across; bracts absent; rays 8–22, 3–6 cm, subequal; bracteoles usually absent or 1–5, linear, shorter to longer than the flowers; umbellules 10–25-flowered, ca. 1 cm across; pedicels unequal. Calyx teeth minute, ovate or semi-orbicular. Petals long-obovate, purplish-red sometimes white, 1–1.2 × ca. 0.8 mm. Anthers pur-plish-red, sometimes white. Stylopodium dark purple, short-conic. Fruit broadly ovoid, ca. 1.8–2.2 × 1.2–1.5 mm; ribs filiform. Fl. Jul–Sep, Fr. Sep–Oct. n = 8*. (Flora of China)