Toxic genus of plants in the family Iridaceae; small, onion-like plant with a mauve flower, pineapple-like fruit and a deeply situated bulb. A very persistent weed causing much loss of productivity in the pasture. Is also a common cause of intestinal obstruction with phytobezoars produced from the fibrous leaves. Causes infertility and incoordination in sheep if infested with the leaf fungus Helminthosporium biseptatum. Called also onion grass. Includes R. bulbocodium, R. longifolia (syn. R. bulbocordium, R. rosea), R. rosea var. australis.


