Yesterday they opened, the flower buds on my Hoya kerrii:
All photos above: Hoya kerrii blossoms on July 23, 2013
And to compare the Hoya kerrii blossoms with the Hoya carnosa compacta:
Hoya carnosa compacta blossoms
Hoya kerrii blossoms
The plush part of the carnosa compacta blossoms is pink and the inner petals are white and pointy turning deep red toward the middle. I've noticed that these blossoms develop large drops of dew between the inner petals after the plant has been watered.
The kerrii flowers, however, are beige or almost yellow with a slight pink iridescence, depending on the angle at which you look at them. Their inner petals are deep pink and round.
The interesting difference to the carnosa compacta flowers, however, is that the kerrii flowers develop dew drops at the ends of the inner petals, not in between.
Three photos above: Hoya kerrii blossoms with dew on July 23, 2013