I have always thought that the lack of information about Magnificum is a little weird. I pieced this together about it a while ago from data gleaned from several different sources.
The original collection and subsequent description to science was by Linden in the Cat. Pl. Exot. 19:2, 1865. The collection data online is sparse, the only data being that it was collected on the Rio Magdalena in the Cundinamarca Department. The Magdalene River is the largest in Colombia. Not all of it is navigable in the present day, I have no idea what was able to be explored in 1865.
The mouth of the river is at 0 elevation and it rises in the Andean stretches to about 12100 ft.
Present day photographs of Magnificum in situ and reports of wild collected seed from wild in situ specimens has been documented from Antioqua, in the NW Andean region of the country and in Santander Dept in the NE Andean region. That is all I was ever able to find.
From my experience growing it, it tends toward epiphytic, liking very well draining media and frequent watering but not to be kept wet.
