This is pattern #96 in the book “100 Lace Flowers to Crochet.” Instructions on page 109. Featured on page 27 of the Showcase.

Finished height: 3-1/8 inches (79 mm)
Thread required: 9 yards (8.2 m)

All pattern samples in this book are made with size 10 thread and a size 5 (1.9mm) crochet hook.