Yes, and no. As a general rule, pubicalyx leaves are longer and thinner in both width and leaf thickness.

However; Hoya sp. HSI-037 is thought tp be the original pubicalyx, prior to selective breeding. It's leaves are quite thick. And then you have Hoya celata (also known as pubicalyx 'White Dragon') and Hoya pubicalyx 'Black Dragon', both which have quite succulent leaves.

Once again, thank you so much for sharing all your knowledge on Hoyas! Did you go to Hoya University? lol

I guess my next question is ....where do I find Hoya so. HSI-037? And White Dragon and/or Black Dragon? I guess Epiphytica?

Thanks!

Sometimes you can find them on ebay through US sellers (beastlyflower2012 or jan272724). My HSI-037 got a major haircut, so it's recovering. My celata and black dragon are still small (got them recently from Jack), so waiting on them to grow up a bit!

Thanks. I will certainly add those to my wish list. :-)

That should be a beautiful pot especially if they all end up flowering at the same time!