Euphoria cyathophora

from The Collaborative International Dictionary of English v.0.48

fire-on-the-mountain \fire-on-the-mountain\ n.
   1. poinsettia ({Euphoria cyathophora}) of the U. S. and
      eastern Mexico; often confused with {Euphoria
      heterophylla}.

   Syn: painted leaf, Mexican fire plant, {Euphoria
        cyathophora}.
        [WordNet 1.5]