The orchid Oncidium Helmut Sang is a hybrid registered with the Royal Horticultural Society by N.Dank in 2019. It is originated by H.Sang
Top three species ancestors and their influences are

• Oncidium alexandrae (53.32%)
• Oncidium noezlianum (10.94%)
• Oncidium harryanum (8.98%)  subgenus Nevadensia