The Collaborative International Dictionary of English v.0.48:

Puccoon \Puc*coon"\, n. [From the American Indian name.] (Bot.)
   Any one of several plants yielding a red pigment which is
   used by the North American Indians, as the bloodroot and two
   species of Lithospermum (Lithospermum hirtum, and
   Lithospermum canescens); also, the pigment itself.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Lithospermum canescens
    n 1: perennial North American plant with greyish hairy foliage
         yielding a red or yellow pigment [syn: hoary puccoon,
         Indian paint, Lithospermum canescens]