| Author | Nutt. | |
| Distribution | Southern 2/3rds of the Coastal Plain; also on the southern Outer Banks. First collected in 1937, most recently in 1988. A specimen from Rowan County in the Piedmont has no image and needs an ID check.
Native of southwestern GA to south-central TX. Adventive ME to MI and SC. | |
| Abundance | Rare to uncommon, to perhaps infrequent in the southwestern Coastal Plain. | |
| Habitat | Roadsides, railroad margins, fields, waste areas, vacant lots, campus weed, margins of dunes. | |
| Phenology | Flowering and fruiting May-August, rarely into early winter. | |
| Identification | The species can easily be confused with Common Sunflower (H. annuus), due to the broad disk and the triangular leaves. However, involucral bracts of H. debilis are lanceolate and 1-3 mm wide (vs. rather ovate and 4-8 mm wide in H. annuus). | |
| Taxonomic Comments | Apparently all of our plants are subspecies cucumerifolius.
| |
| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | FAC link |
| USACE-emp | UPL link |
