Not a bad producer and one of the one's I have extra of. As I said, it is well behaved and never gives me trouble. Had it for many years and once thought I lost the ID. Then the plastic pot it was in started falling apart and I re-potted it. During the re-pot, I found the ID tag buried under the soil. ( for awhile, I was burying ID tags to protect them from breakdown under UV - worked in this case)
Atroviolaceum (Heimlich) has been around a long time.