centaurium(n = noun.plant) genus centaurium - genus of low-growing herbs mostly of northern hemisphere having flowers with protruding spirally twisted anthers;
is a kind of dicot genus, magnoliopsid genus
is a member of family gentianaceae, gentian family, gentianaceae

   a genus of low-growing herbs mostly of the northern hemisphere having flowers with protruding spirally twisted anthers. [WordNet 1.5]

centaurium calycosum, centaurium minus, centaurium scilloides, genus centaurium