C1 is the clone. It's the clone that has random red splotches on the petals / sepals.
There is some discussion on whether C1 is a clone of speciosa or of tetraspis. It seems to have been unclear in past records. Another post I just comented on links to an article that apparently indicates it's now synonymous and should be tetraspis but I can't download the article on my tablet so will have to take a closer look when I'm on the laptop.