Tongoloa silaifolia (H. Boiss.) H. Wolff

Some authors consider this taxon to be conspecific with Tongoloa stewardii. It has reputed medicinal value (in Shaanxi).

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*.

Chongqing, Qinghai, Shaanxi, Sichuan, Yunnan.

Damp grasslands; 2200–4000 m.