I have some imput from a reader, Vasyl, who sent me an actual photograph of what i believe is the very same piece of embroidery from this region. You can see that it is mostly free-form satin stitch. The green seems to have faded.
There are examples of uncounted floral embroidery in western Ukraine, but they are based on satin stitch and stem stitch. This is unique in Ukrainian embroidery, as far as i know. I suppose they could have been developed from work like the first example under the influence of contemporary art, Arts & Crafts, Art Deco.