That's a new one to me, I've never heard of either name. The Catalogue of Life shows the accepted name as
Wax Plant (Hoya latifolia) with H. loyceandrewsiana being a synonym. Joni, from SRQ Hoya's isn't around the site anymore but she has photos at the database entry for H. latifolia.
The CoL shows it listed as:
Hoya loyceandrewsiana T. Green -Species - synonym for Hoya latifolia G. Don
Carol Noel (AlohaHoya) is a friend of Ted Green, perhaps I'll ask her on FB later today if she knows anything about it or can check with Ted.
