We love the Eastern US native, false rue anemone, flowering now in the woodland garden at JLBG. This is one of the great winter flowering perennials, which we feel should be a part of every shade garden. The plant below has been thriving for decades under a grove of giant black walnut trees. Depending on where within its native range from Minnesota south to Florida, the genetics originated, it starts flowering from late January to early March.
Isopyrum biternatum is the midst of a bitter custody battle with the genus Enemion, but there hasn’t been any new DNA work since the early days of the field, when the sole use of chloroplast DNA gave us a number of incorrect name changes that were later retracted. Until we see some nuclear DNA results, we’re leaving it in the genus isopyrum.