Bulbophyllum levanae var levanae

Bulbophyllum levanae var. levanae

syn. Bulbophyllum nymphopolitanum

One can understand why the RHS Registration Authority try and keep the number of species in a genus (for example, one as large as Bulbophyllum) down to a minimum, especially where the differences are not so apparent. We can see also this rationalisation in other genera. You may be able to see the papillose lip?. Will post a closer view.
bernabu