This beautiful lily, raised by Mr. Francis Parkman, of Boston, between Lilium auratum and L. speciosum, is the subject of a beautiful colored plate in the London Garden. The color is much like a very rich tinted speciosum, but the flowers are about nine inches across, and in other respects like auratum.

https://chestofbooks.com/gardening-horticulture/Gardener-Monthly-V21/Lilium-Parkmanni-Japan-Maples.html