The orchid Oncidium Stonehurst Yellow is a hybrid registered with the Royal Horticultural Society by Stonehurst O.N. in 1976.
Top three species ancestors and their influences are

• Oncidium alexandrae (51.66%)
• Oncidium spectatissimum (12.11%)
• Oncidium nobile (6.93%)  subgenus Odontoglossum