From Tony Avent's fine article on growing ladyslippers ( ...Read Moretarget="_dgnew"rel="nofollow">http://www.plantdelights.com/Article/Cypripedium-Lady-Slippe... ) :
"This 2003 Paul Keisling hybrid (Cypripedium parviflorum var. pubescens x Cypripedium macranthos var. speciosum) is a similar cross to Cypripedium 'Aki'. The clump forms 18" tall, erect flower stalks, topped in mid-spring with large pocketbook-like flowers of creamy white flushed with burgundy. The pocketbook is backed by three slightly twisted cinnamon and gold sepals. (Hardiness Zone 4-7)"
From Tony Avent's fine article on growing ladyslippers ( ...Read More