Local name Canada sanicle. Family = Apiaceae. Common in area hardwood forests. Just one at this site.
Lots blooming in meadow areas today.
I also saw this the day before at Pepperwood Preserve. Wasn't very common up here at Old Caz.
Sanicula is a genus of plants in family Apiaceae (or Umbelliferae), the same family to which the carrot and parsnip belong. This genus has about 40 species worldwide, with 22 in North America. The common names usually include the label sanicle or black snakeroot.