1) Asterid dicot genus 2) Genus parthenium 
Parthenium is a genus of flowering plants in the aster family, Asteraceae. The name is derived from either the Greek word παρθένος (parthenos), meaning `virgin,` or παρθένιον (parthenion), an ancient name for a plant. Members of the genus are commonly known as feverfew. Notable species include Guayule (P. argentatum) and P. hyst.....
[n] - small genus of North American herbs and shrubs with terminal panicles of small ray flowers
genus Parthenium noun small genus of North American herbs and shrubs with terminal panicles of small ray flowers