蒙古前胡 meng gu qian hu

Plants ca. 50 cm, glabrous. Rootstock stout. Stem solitary, shallowly fluted above. Basal leaves 6–12 cm; petioles ca. 3 cm, sheaths dilated; blade 2-pinnate, pinnae 3-paired, 2–3-pinnatifid; ultimate segments narrowly lanceolate or linear, acute, 10–15(–20) × 1–2 mm. Stem leaves few, reduced above. Bracts 1(–2), linear, ca. 4 mm; rays 10–15, fluted, unequal, up to 3.2 cm; bracteoles numerous, linear, ca. 4.5 mm, unequal, scarious-margined; umbellules numerous-flowered. Pedicels ca. 1 cm. Calyx teeth obsolete. Petals white, broadly spoon-shaped, with a inflexed apex. Fruit obcordate, ca. 5.5 × 4 mm, lateral wings white, ca. 1 mm broad; vittae 2–3 in each furrow, 6 on commissure. Fl. and fr. Jul–Sep.

Grasslands. Nei Mongol [N and W Mongolia].