Brassica fruticulosa (indian mustard) is an uncommon weed in Tasmania with recorded observations at Low Head and south at Cornelian Bay.   It is hairless, erect annual up to 1m tall. The leaves are glaucous, the basal ones divided with one or two pairs of lateral lobes, the upper ones more or less entire. The flowers are bright yellow, about 1.5-2cm across. It is believed to be a hybrid (hence the "X" in the species name).