Dutchmans puzzle/Pinwheel flowers - a four patch block

This quilt block is put together in quadrants and therefore belongs in the four patch family.  It uses flying geese blocks to construct the subunits - although if you needed to you could substitute two HST's for the geese.  

This version by Nancy's notions uses a different colour sky at each side of the goose

The same approach is followed by this chock-block blog post whish calls the block Pinwheel Flowers, whereas this post from the same blog has the more traditional same colour sky

Patchwork Square has the traditional block and example layouts on the next page

So does Quilters Cache here.

This block is based upon a four patch - other four patch blocks