Masdevallia pyxis is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Epidendreae, subtribe: Pleurothallidinae,  
Genus Masdevallia   subgenus Polyanthae  section: Successiviflorae   subsection: Successiviflorae 
Infraspecific taxa recognized within Masdevallia pyxis: infraspecific taxa
This species is found in Peru.