The orchid Paphiopedilum Captain Spender Clay is a hybrid registered with the Royal Horticultural Society by Armstrong/Brown in 1910.
Top three species ancestors and their influences are

• Paphiopedilum fairrieanum (50.00%)
• Paphiopedilum villosum (50.00%)  subgenus Paphiopedilum  section: Paphiopedilum