The orchid Masdevallia Memoria Otto Eigeldinger is a hybrid registered with the Royal Horticultural Society by P.R.Knight in 2020. It is originated by C.Halls
Top three species ancestors and their influences are

• Masdevallia veitchiana (56.25%)  subgenus Masdevallia  section: Masdevallia   subsection: Coccineae 
• Masdevallia caudata (12.50%)  subgenus Masdevallia  section: Masdevallia   subsection: Caudatae 
• Masdevallia triangularis (12.50%)  subgenus Masdevallia  section: Masdevallia   subsection: Caudatae