| Author | (Nuttall) Rydberg | |
| Distribution | Southern Coastal Plain only.
Coastal Plain, NC to southern FL and southern AL. | |
| Abundance | Rare on the landscape, but a few populations are large. The NCNHP database has 24 records, of which about half are considered extant. This is a Significantly Rare species. | |
| Habitat | Wet Longleaf Pine-Wiregrass savannas and flatwoods, pitcher-plant seepages, roadside ditches. |
| Phenology | Flowering and fruiting April-May. | |
| Identification | Three of our species of sneezeweed bloom in mid-late spring, have well-developed basal leaves but few and small stem leaves, and can be testy to tell apart without attention to details. Leaves of Southeastern Sneezeweed are not decurrent on the stem or at most 5 mm long (there is no continuation of leaf tissue as a "wing" down the stem). Both Savanna Sneezeweed (H. vernale) and Shortleaf Sneezeweed (H. brevifolium) are conspicuously winged. This is a quite striking species, despite only one or two flowering heads per plant; obviously, each head is quite broad (about 2 inches across). Both this species and H. vernale have golden-colored disk flowers and grow in similar wetland habitats in the southeastern corner of the state; thus, carefully check the midstem leaves for whether they are strongly decurrent on the stem or not. | |
| Taxonomic Comments | None
| |
| Other Common Name(s) | None | |
| State Rank | S2 | |
| Global Rank | G5 | |
| State Status | SR-P | |
| US Status | | |
| USACE-agcp | OBL link |
| USACE-emp | OBL link |
