At Last 

I managed to get shots of a flower on Good King Henry, Chenopodium bonus-henricus,

 The buds are hard enough at only about 4 to 5 mm in size.

The flower itself is so delicate that the petals hardly show against the bright green background.

The yellow dots of the stamens are about 2 mm. in size and the cluster makes it harder to focus on the flower.

This time I used the 90mm Tamron macro lens stopped down to f22 on the front of a 1.7 tele extender and four Kenko extension tubes with a 10 dioptre lens in the front 

with the ring flash mounted on the assembly on full power. Took this shot at full distant focus; tried another at closest but could not get the complete flower in at 5 times life-size. 

It does however show the almost transparent petals better than the 4x JPG.

Oddly Culpeper has no mention in his herbals of this plant; Presumably because it was not used as a treatment for disease or illness but consumed as part of peoples' diet.