Skill level = Advanced

Suggested using Crochet cotton #30
US hook #9 which is 1.25 mm

Special stitches
ch - chain
dc-double crochet
hdc - half double crochet
dtr - double treple crochet
2 tr cl - 2 treble cluster
1 quadruple treble crochet - 5 qrtr = in one stitch

Pattern #27 on page 63 of Decorative Crochet.
Pattern 7, Colchique, in 1000 Mailles.