I think it is referring to the large side lobes of the lip, much more prominent than most Phals. To me it looks like the reverse of peloric (which is lip pattern in the petals) Here it looks like the petal pattern in the lip.
From what I have understood these are "reverse peloric" my guess is that they were created using RNA interference much like the Sogo Vivien was created to have variegated leaves very interesting...