Plants 30–50 cm. Caudex simple. Stem solitary, hollow, tawny or purplish, shiny, hispidulous, much-branched above. Basal leaves many, petiole sheaths broadly ovate, hispidulous, scarious-margined; blade broadly rhombic, 2-pinnate; ultimate segments ovate, 10–15 × 6–11 mm, 3-lobed, parted or sub-pinnate, serrate, white hispid on both surfaces and leaf-rachis, especially margins and veins abaxially. Umbels 8–12 cm across; bracts 5–7, lanceolate, shorter than rays, densely white-hispid; rays ca. 10, 3.5–6 cm, unequal; bracteoles numerous, similar to bracts; umbellules many-flowered; pedicels 1.5–5(–7) mm. Calyx teeth subulate, ca. 0.1 mm. Petals white, costa deep yellow, suborbicular, with a broadly inflexed apex, abaxially white-hispid. Stylopodium low-conic; style short, erect. Fruit narrowly ellipsoid, dorsally compressed, 5.5–6 × 2–2.5 mm, densely hispid; vittae 1 in each furrow, 2 on commissure. Fl. and fr. Jun–Aug.
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