Rosa hugonis Hemsl. probably also Rosa xanthina f. hugonis and Rosa xanthina f. lutea FATHER HUGO’S ROSE, GOLDEN ROSE OF CHINA. A very thorny upright bush to about 2.5m in height, with palish yellow cupped flowers 4-6cm across. Fruit dark redish. Found in central China as far south as the Min river in western Sichuan, growing in rather dry valleys. The thorns vary greatly in type and number, consisting of bristles and/or flattened crimson thorns like R sericea. It is likely that R. hugonis is a wild population of a hybrid between R. sericea and R. xanthina. Introduced from China in 1899. Zone 5, will survive down to –25°C.