Here is the painting in the Usher Gallery; it is represented as a landscape image. I had seen this work in the gallery through the years and never questioned it.
While I was studying it carefully - first with two watercolour paintings and then with a cut felt textile piece - I realised that it was portrait in shape and represented flowers and foliage in vases on a table.
The flower were cultivated poppies as indicated by the attached foliage.