The orchid Dendrobium Blue Horizon is a hybrid registered with the Royal Horticultural Society by Miyamoto in 1986.
Top three species ancestors and their influences are

• Dendrobium bigibbum var. superbum (37.50%)
• Dendrobium gouldii (37.50%)  section: Spatulata 
• Dendrobium taurinum (12.50%)  section: Spatulata