I did a search of my own and discovered that the B. nodosa x Epi. cordigerum hybrid is Encyvola (Eyv.) Megan. The spelling on you tag wasn't wrong, it's just that the taxonomists got a hold of Epi. cordigerum, which is now E. cordigera.
I think it's a beautiful plant, and thanks to your post, it's going on my wish list!