Description from Vogue Knitting:
Double leaf pattern is knit in a semi-circle following the chart with crocheted shell stitch trim and fringe.

Gauges: One 22-st twin leaf panel = 4½“/11.5cm, 20 rows = 4”/10cm over twin leaf (knit) pat foll chart using size 9 (5.5mm) needles
One shell pat = 3½”/9cm and 10 rows = 4”/10cm over shell (crochet) pat using size I/9 (5.5mm) hook