Patches up to c. 3 dm. diam. Lvs on slender petioles up to c. 4 cm. long ± clad in retrorse hairs. Lamina 3-5-7-lobed almost to base, pilose to hispid, ± 10-15 × 15-25 mm.; basal sinus broad, deep; lobes narrowly obovate-cuneate, acutely deeply toothed, sinuses narrow. Umbels 15-20-(40)-fld, forming beads ± 5mm. diam., on slender to rather stout peduncles up to ± 5 cm. long; peduncle occ. prolonged and bearing a further small head, Fls sessile, glab., us. reddish brown. Fruiting heads ± 1-2 mm. diam., occ. larger. Mericarps somewhat turgid, pale brown, us. glab., acute on dorsal edge; one obtuse inconspicuous rib on each face.

2n = 48

n = 22

Perennial, forming large patches; stems slender. Lvs simple, dull green, densely hairy above and below, (5)-10-20-(35) mm diam., deeply divided to 1/2-4/5 of radius into 5-7 segments; segments narrow, oblong to obovate, each again usually 3-lobed and serrate; teeth sometimes with short, inconspicuous hair tips; margins flat; petiole densely hairy. Umbels simple, with numerous fls; peduncles ± = lvs. Fls sessile or shortly pedicellate. Fr. glabrous, 1.5-1.8 × 1-1.2 mm, acute on dorsal edge; ribs raised, slender.