Plant us. hispid to pilose, forming patches up to c. 3 dm. diam. Lvs on petioles up to ± 5 cm. long, clad in patent to retrorse hairs; lamina firm, (2)-5-10-20-(40) mm. diam., distinctly 5-7-lobed; basal sinus narrow to open; lobes us. again lobulate, sharply toothed (teeth rarely obscure), sinus narrow. Umbels (5)-10-20-(40)-fld, on peduncles 1-2-(4) cm. long. Fls sessile or nearly so. Frs red-brown, crowded into heads 2-5 mm. diam.; mericarps acute on dorsal margin, with 1 acute rib on each face.