Masdevallia calura
The species is endemic to Costa Rica where we have seen it growing and flowering on remnant trees at 1400m (from memory) on a misty volcanic ridge (photo 2)
The species is recorded from 200-2000m altitude and so is unlikely to be fussy about temperature but we grow the species cool (min 12C) in our Cloud Forest Greenhouse, and well watered all year reflecting the habitat in which we observed plants.
The species is one of the smaller growing masdevallias with leaves around 6-8cm and flowers clear of the leaves on repeat flowering spikes. Remember not to cut the old spikes until they are completely dead – we have had flowers over a long period from some spikes.