From the genus name Scalesia, in turn from "Scales" + -ia, "Scales" being an error for the English surname Stables.
"scalesia." YourDictionary, n.d. Web. 13 June 2018. <http://www.yourdictionary.com/scalesia>.
scalesia. (n.d.). Retrieved June 13th, 2018, from http://www.yourdictionary.com/scalesia