Graceful and Attractive Iris
Mr. Burbank's experiments with the iris have been made largely with the Japanese variety; but he tells us that there is ample opportunity to do good and interesting work with the varieties that are found in any garden. Contrast this specimen, with its graceful drooping petals, for example, with ones shown in succeeding pictures. Obviously, here is ample material for selective breeding.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 10 Chapter 2