| Author | Bickn. | |
| Distribution | Weakley's (2024) map shows it as occurring in the NC Mountains, but the website editors see no specimens in SERNEC nor other evidence of occurrences in NC.
"NS and ME south disjunctly to the Potomac River Gorge, n. VA and sc. MD (Knapp et al. 2011), and to Table Rock, SC" (Weakley 2024). | |
| Abundance | Not known for certain in the state. Weakley's map shows it as "rare" in the Mountains. This is a newly described or elevated species, with a confused taxonomy. The website editors have given an SR State Rank, as State Reported. | |
| Habitat | "Cliff ledges, rock outcrops, river scour terraces". Thus, it has limited and quite "exacting" habitat requirements. | |
| Phenology | Blooms in March-April, and fruits in June. | |
| Identification | See the key in Weakley (2024). The species is clonal, often forming large patches, according to NatureServe Explorer. It grows only to 2-5 feet high. | |
| Taxonomic Comments | | |
| Other Common Name(s) | Nantucket Shadbush | |
| State Rank | [SR] | |
| Global Rank | G3Q | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
