- Family: aster (Asteraceae)
- Habitat: moist thickets, streambanks, and moist open woods
- Height: 4-8 feet
- Flower size: flowerheads 2-3 inches across
- Flower color: yellow
- Flowering time: July to September
- Origin: midwestern and southern US; introduced into New England
Pairs of leaves are joined around the stem and form a cup that can hold rainwater.