The orchid Masdevallia Grace Arms is a hybrid registered with the Royal Horticultural Society by G.Fuller in 1993. It is originated by A.Arms
Top three species ancestors and their influences are

• Masdevallia ignea (75.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Caudatae 
• Masdevallia yungasensis (25.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Masdevallia