裂苞东俄芹 lie bao dong e qin

Trachydium napiferum H. Wolff, Acta Horti Gothob. 2: 300. 1926.

Plants 20–30 cm. Root short-napiform. Stem stout, ribbed and branched. Basal leaves few; petioles slender, sheaths small; blades broad-triangular, ca. 15 × 8–10 cm, 3-pinnate; pinnae 7-paired, basal pinnae short petiolulate, broad-obovate, 0.5–1 cm, base cuneate, margin pinnate; ultimate segments 2–4 × ca. 1.5 mm. Primary umbels ca. 12 cm across; peduncles ca. 5 cm; bracts absent; rays unequal, up to 6 cm; bracteoles 3–5, linear, apex pinnate, similar to leaves; umbellules 15–20-flowered; pedicels unequal, plane-winged, up to 5 mm. Calyx teeth conspicuous, ovate-triangular. Petals broad-obovate, apex obtuse. Young fruit cordate, ca. 1.5 × 2 mm (mature fruit not known). Fl. Aug.

About 4000 m. NW Sichuan.

This incompletely known species is recorded only from the type gathering.