This marigold blossom is from the book "Encyclopedia of Embroidered Flowers" by Barbara Baatz.
(Found on Page 62 in case anyone out there happens to have the book also)
First stitch a small ring of light yellow detached chain stitches.
Fill the center with light green french knots and the center of each detached chain with a darker yellow straight stitch.
Here is the marigold blossom with the rest of my flower sampler I started. I eventually want to fill up the entire space with flowers. You can see my previous flower posts on my Flower Page.