Patches upto ± 4 dm. diam.; stems elongate, often sprawling; ± clad in patent soft hairs. Lvs on pilose petioles upto c. 10 cm. long. Lamina 1-2-3 cm. diam., ± pilose; sinus, deep, narrow, ± parallel-sided, lobed to ± ⅔ way; lobes (3)-5-(8), again lobulate, acutely dentately toothed. Umbels (10)-20-30-fld, ± 15 mm. diam., on very slender us. pilose peduncles up to 15 cm. long. Fls ± 5 × 3 mm., on capillary rays c. 5 mm. long. Fr. (1·5)-2-(4) mm. diam., brownish, pubescent or almost bristly. Mericarps acute on dorsal edge, with 1 us. distinct rib on each face.

2n = 48

Perennial, forming large patches; stems slender. Lvs simple, dull green, moderately hairy above and below, (5)-10-25-(35) mm diam., divided to 1/4-⅔-(4/5) of radius into mostly 5 segments; segments broadly oblong to obovate, each again usually 3-lobed and serrate; many teeth with conspicuous hair-tips giving an irregular appearance to the flat margin; petiole densely hairy. Umbels simple, with numerous fls; peduncles much > lvs. Fls long-pedicellate. Fr. hairy, 1.5-1.8 × 1-1.5 mm, acute on dorsal edge; ribs raised, slender.