As much as these plants look the same they are not. These varieties of Hoya pubicalyx are all seed raised plants so it would be best to look at them as being sisters or brothers. Some may have similar traits but they are still individuals.
The perfect example are the newly collected (Philippines) Hoya pubicalyx 'White Dragon' and 'Black Dragon', these plants are still Hoya pubicalyx although they look very different from 'Pink Silver', 'Royal Hawaiian Purple', 'Bright One', 'Chimera' or 'Fresno Beauty'. Anyone can come up with a new variety but first you need to grow plants on from seed and then select one that shows an interesting trait like a variation in colour of the blooms or leaves. Leaf variegation and all these other different traits are all just genetic variation that can happen within a species.

If for any reason you don't have the name when you get one of these plants it would be best to just put Hoya pubicalyx on the tag vs assigning an name because this can cause confusion later on when the plant is traded.

Congratulations on your cuttings, sounds like they are doing well.

Mike

Thanks, Mike!
I guess I got confused, as some sites list these as synonyms while others do not. No combining the two, then.

Kukka,

Three days in the mail? It would be a miracle!

My best time was 5 days from U.S. but now our best time is 21 days!

That's why I admire your perseverance, Mitzi.

Congratulations on your new cuttings, Kukka! I'm glad you are going to give serpens a try. I JUST got some fresh willow branches today (they're sitting in a thermal bag behind me this moment), so I am going to start the light/dark rooting experiment this weekend. That's kind of a tangent, but I didn't want you to think I'd forgotten!

/Mike Thanks for taking such a definitive stance on the RHP/Chimera confusion. So many Hoyas end up with multiple names it's sometimes hard to know when to stop being a skeptic.

I'm glad you are starting the experiment, greedyghost, especially as I now have some 16+ cuttings rooting.

These vining houseplants seem to be so much more alive than other houseplants, don't you think? This gardening stuff is new to me, and I would feel evil if I killed them.