I had to look this one up as I was unsure of how this was done. If there is a wild cross and you are unsure of the which plant bore the seedpod of a suspected cultivar, parents are written in alphabetical order. If you know which plant was the mother and had the seedpod, the mother is written first, followed a multiplication sign, followed by the father. I have seen this plant written both ways on the internet so I have to go with how it was labeled when I got it; so I assume that the plant that bore the seedpod was Hoya fungii. Please let me know if this is incorrect in the comment section of a YouTube video that I will post in the near future.