| Author | (Dammer) O'Donnell | |
| Distribution | Coastal Plain only, at the present time (Weakley 2023). However, the SERNEC database shows no records for this entity.
"South America (Argentina, Paraguay, Bolivia, and Brazil); also in se. North America, the distribution poorly understood because of previous lack of recognition." (Weakley 2023) | |
| Abundance | Apparently uncommon, but poorly known, as it has been confused with other taxa. | |
| Habitat | "Disturbed areas." (Weakley 2023) | |
| Phenology | Blooms from July to December | |
| Identification | Extremely similar to another exotic species -- I. triloba, but I. grandifolia has "Sepals 8-14 mm long, lanceolate", as opposed to I. triloba having "Sepals 5-7 mm long, oblong" (Weakley 2023). Both have small pink to lavender flowers, with three-lobed leaves. | |
| Taxonomic Comments | | |
| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | GNR | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
