Madia

from WordNet (r) 3.0 (2006)

Madia
    n 1: genus of sticky herbs with yellow flowers open in morning
         or evening but closed in bright light [syn: {Madia}, {genus
         Madia}]

from The Collaborative International Dictionary of English v.0.48

Madia \Ma"di*a\, n. [NL., fr. Sp. madi, fr. Chilian madi, the
   native name.] (Bot.)
   A genus of composite plants, of which one species ({Madia
   sativa}) is cultivated for the oil yielded from its seeds by
   pressure. This oil is sometimes used instead of olive oil for
   the table.

   Syn: melosa, Chile tarweed, madia oil plant, {Madia sativa}.
        [1913 Webster]