rosa hemisphaerica

Rosa hemisphaerica, also known as the sulphur rose, is a rose species with pale yellow flowers native to western Asia. The wild form, known as Rosa raphinii, has single flowers with five petals. A double-flowered form was one of the first yellow roses introduced to European gardens; John Bellenden Ker Gawler stated in 1815 that the species had been cultivated in England for nearly 200 years. The scent of the flowers has been described as unpleasant.

The name Rosa hemisphaerica refers to the half-rounded ...