Ampelaster is a monotypic genus of flowering plants in the family Asteraceae (daisy family), native to North America. It contains a single species, Ampelaster carolinianus (Walter) G.L.Nesom, commonly known as the climbing aster.
The genus is remarkable within Asteraceae for its climbing habit. Ampelaster carolinianus scrambles through shrubs and woody vegetation, using surrounding plants for physical support. In some situations it also produces adventitious roots that assist in anchoring itself. This vining or scrambling growth form sets it apart from the overwhelmingly erect or prostrate members of the daisy family.
Flower heads are borne 1–15 per branch and bear both ray florets and disc florets in the typical Asteraceae arrangement. The ray florets range in color from pale pink to rose-purple, giving the plant a delicate, aster-like appearance when in bloom.
The genus is restricted to the southeastern United States, occurring in Florida, Georgia, North Carolina, and South Carolina. It grows in wetland margins, swamp edges, and moist thickets — habitats consistent with the humid coastal plain of the region.
Taxonomy Notes
Ampelaster is a monotypic genus established to accommodate Ampelaster carolinianus, previously treated within the broadly circumscribed genus Aster. It belongs to the family Asteraceae (also written Compositae) and is accepted as a distinct genus by GBIF and current treatments. The genus contains only one known species.
Distribution
Ampelaster is native to the southeastern United States, recorded from Florida, Georgia, North Carolina, and South Carolina. It typically grows in moist, low-lying habitats such as swamp margins and thickets along the coastal plain.
