The sister seedling of R. 'Vulcan' that was created in the 1950's. R. 'Vulcan's Flame' is a bit more red-orange than R. 'Vulcan', otherwise it is just about the same plant. Sometimes hybridizers can see there is enough difference between sister seedlings to name another. Obviously this is the case here. The plant grows very full and wide, and flowers heavily. Hardy to -15 deg R, so is a good choice in harsh climates.