The Collaborative International Dictionary of English v.0.48:

madia oil plant \madia oil plant\ n.
   The Madia sativa, a South American herb with sticky
   glandular foliage, the source of madia oil. See Madia.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

madia oil plant
    n 1: South American herb with sticky glandular foliage; source
         of madia oil [syn: melosa, Chile tarweed, madia oil
         plant, Madia sativa]