From the pattern:
Requires 200 yards thread size 20 - Doily 14” diameter

Rnd 13 -- This and the next rnd may be made in green if you wish…

Rnd 15 -- this rnd and the next 2 may be made in pansy or other color desired.*

A doily in 21 round features
chain in chain
shell in shell
chains filled with single and double crochet
treble crochet clusters
picots