The orchid Masdevallia Memoria Chris Waterman is a hybrid registered with the Royal Horticultural Society by C.Halls in 2019.
Top three species ancestors and their influences are

• Masdevallia veitchiana (75.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Coccineae 
• Masdevallia decumana (25.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Caudatae