I can't recall if this has been discussed previously or not and I'm wondering if these are the same plant with 'Rubra' being the correct cultivar name? Krimson Princess Hoya (Hoya carnosa 'Rubra')
I grew both Hoya carnosa 'Rubra' ("Krimson Princess Hoya") and Hoya carnosa 'Tricolor ("Krimson Queen Hoya") many years ago and as far as I'm aware Krimson Princess has always been a common name for Hoya carnosa 'Rubra' just as "Krimson Queen" has always been a common name for Hoya carnosa 'Tricolor': Krimson Queen Hoya (Hoya carnosa 'Tricolor')
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