The orchid Masdevallia Alyssa Maria is a hybrid registered with the Royal Horticultural Society by Egon Dreise in 1992.
Top three species ancestors and their influences are

• Masdevallia datura (50.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Masdevallia 
• Masdevallia veitchiana (50.00%)  subgenus Masdevallia  section: Masdevallia   subsection: Coccineae