This is a stunning American hybrid by Skinner (1959) with the parentage (R. brachycarpum var brachycarpum X R. catawbiense) X unknown. The pollen parent must involve R. fortunei as the flowers of QA have a fine, sweet scent.
QA has proven surpisingly hardy on our property, but it is not flower bud hardy. I'd estimate the flower bud hardiness to -25C. In any case I have used QA as parent in many crosses. It produces fat seed pods easily and you don't need to worry much about self
pollination because the flowers don't have anthers. QA is a popular parent of doubles where ever it is available to hybridizers. A magnificent plant that should be tried more even in Scandinavia.