The orchid Phragmipedium Summer Sun is a hybrid registered with the Royal Horticultural Society by Orch.by Ackers in 2006.
Top three species ancestors and their influences are

• Phragmipedium besseae (62.50%)  section: Micropetalum 
• Phragmipedium longifolium (25.00%)  section: Lorifolia 
• Phragmipedium schlimii (12.50%)  section: Micropetalum