The root systems of an ancient tree seemed to furcate and furrow the surface of his thighs, and where his skin was not covered in dark hair, it was strangely rippled with wild webs of some kind of tissue just beneath the skin.
-- Michael Chabon, The Amazing Adventures of Kavalier & Clay: A Novel
Just focus your attention on the eyes and let your mind furcate as it will.
-- Patrick Moran, Tsunami Sundog
Furcate is from the Medieval Latin word furcātus which meant "cloven."