I'm not a bromeliad expert and in fact, I know little about them; I get so many of them confused and I really should have stated that my ID is just a guess. As far as I know, both of these plants of mine are/were Guzmania lingulata. I still have the one on the left but the one on the right I gave to a neighbor a few years ago when I was downsizing. I'm not real sure about differences in form, I'm really bad at comparing photos. The plant in my photo on the left is crammed into the crook of a tree branch and the plant on the right (shown hanging sideways) was planted in a hollowed out coconut shell that was hanging from a tree branch.