Hi Julie, Cassinia arculeata was accidentally rolled into a new species C. sifton which is a proposed new name for C. arcuata in SE Australia (Orchard, 2017). Canberra Nature Map has dropped back to C. arcuata and C. aculeata but the aculeata names have to be changed back individually. It looks as though the database does not handle these reversions very well and the incorrect name stays against your name.