This shrub is a monotypic genus with dry aggregated achenes, orange-yellow flowers, alternate leaves and green branches. It has received much horticultural interest, and occasionally escapes by seed in eastern states, but it is not yet clear it the species becoming a significant invasive problem. In Ky. it has been recently recorded from CUMB, HARL, MADI and MENI (Abbott et al. 2004; CW).