The island is also infested with the introduced African Boxthorn. Introduced species including olives, bamboo, boxthorn, watsonia and blackberries have displaced native flora. Lycium chinense is one of two species of boxthorn shrub in the family Solanaceae. Local legend attributes Jim to bringing back African Boxthorn (Eddie Menlove blamed him). Mix it with boxthorn juice and false daisy juice and dry. These can include shrubs such as winterfat, spiny hopsage, and boxthorn ("Lycium" spp.). The Western Thick-billed Grasswren; black-bush and Australian boxthorn. Its common names include Chinese box-orange, box orange or boxthorn. Problem weeds are Cape Leeuwin wattle and boxthorn. The vegetation consists of low shrubland dominated by nitre bush, grey saltbush and African boxthorn.