A question to the taxinomists: do you think barbigerum and coccineum (and others in this group named lockianum...) can be considered as the same unique species or not?
I'm not a taxonomist, but coccineum and barbigerum even differ in their leaves. While barbigerum leaves are floppy, the leaves of coccineum are stiff and more erect and keeled.
My barbigerum leaves are small and stiff. coccinium leaves bigger and floppy.
barbigerum var vegvarutianum very narrow stiff and succulent. I think they are all different species.
Species should be separated on flower morphology and/or genetics, not on leaf size or whether their leaves are rigid or floppy. That is a bit of a variable trait.