Mauve (H2) flowers, VII–IX; golden yellow foliage in summer turning orange-red in winter; height 10–15cm; spread 31–45cm.
Wild-collected; found on Sunningdale Golf Course, Surrey, England, by John Letts; introduced by John F. Letts (Windlesham, Surrey) in 1972.
Named after Windle Brook, a stream near Windlesham.
