My guess is also helenae, but is helenae only a form of barbigerum? I thought they were two different species?
I think the envy greens you have seen are malipoense x primulinum.. and not the other way around like this one. I have seen many examples of crosses that looks different depending on which plant you use as a mother
Of course helenae is a species now, but when it was discovered, it might thought as a form of barbigerum, I guess.
Another possibility, maybe because helenae is still illegal in the country of the breeder, so he used the name 'barbigerum', and use 'var. h' to remind himself.