The Collaborative International Dictionary of English v.0.48:
malheur wire lettuce \malheur wire lettuce\ n. (Bot.) A small mustardlike plant (Stephanomeria malheurensis) of Oregon, belonging to the family Cruciferae; it is a threatened species. [WordNet 1.5]WordNet (r) 3.0 (2006):
malheur wire lettuce n 1: a small plant of Oregon resembling mustard; a threatened species [syn: malheur wire lettuce, Stephanomeria malheurensis]