Thank you Frank for the information.
The anemone type flower certainly looks like the 'Primevere' (e.g. our Plant Database, Heart2Heart's image).
Suggestion re two different plants: explains it.
I certainly purchased and planted this peony (these peonies) as one plant, which was also mislabelled.
There are currently three (living) stems in total.
These are:
- approx. 29 inches long + 2 1/2 inches for the flower in the above case.
- approx 38 inches long + 4 inches for the flower in the "bomb" case.
- approx 34 inches long (no flower) in the third case.
There is/are 1or 2 small brown (dead?) buds on the two taller stems.
There is no obvious difference between the leaves on any of the stems, including the maximum leaf size.
Pictures today: