There was a Hoya circulating as H. solaniflora for a number of years that was not the true plant. Nathalie Simonsson collected a large number of Hoya in PNG in 2012, and wrote about the rediscovery of the Schlechter’s plant in The Gardens Bulletin Singapore in 2017. Below – top photo of the incorrect H. solaniflora and bottom photo of the true Hoya solaniflora (NS12-277):