Oncidium Formosum (Oncidium nobile × Oncidium Rolfeae)

The orchid Oncidium Formosum is a hybrid in the Oncidium genus. registered with the Royal Horticultural Society by Vuylsteke in 1904. Registered parents are Oncidium nobile × Oncidium Rolfeae. The key influencing species of this hybrid are Oncidium nobile (75.00% subgenus Odontoglossum ) Oncidium harryanum (25.00% subgenus Nevadensia ) listed in order of their genetic contribution.