Hi,

My two cents worth: I'm sorry to disagree Marg, but I don't think
there's any crochet there at all. In my opinion it is bobbin lace, as
Joanne said.

The "radial" pattern you describe is formed by the pins - used to
stabilise the work while one is creating the bobbin lace - being
gradually placed further apart.

JMHO.

Yvette Stanton
Author of "Elegant Hardanger Embroidery" and "Mountmellick Embroidery:
Inspired by Nature"
www.embroidery.more.at
www.mountmellick.how.to
www.hardanger.how.to