In case anyone hasn't heard yet, that the Hoya 'blue' has opened its flowers. It turned out to be an imperialis var. rauschii: http://www.stenasa.se/ (click on NYHETER on the left and you'll find the photographed flower at the top).
Christina
Hoya 'blue'
Interesting...thanks for that. I did get a cutting which is putting on new growth, but it seems to me the leaf is pubescent rather than glabrous like H. imperialis....will check on that today.