1) Asterid dicot genus 2) Genus prenanthes 
Prenanthes is a genus of plant in the family Asteraceae, often referred to as Rattlesnake root. Molecular analysis in 2009 revealed that the genus is monotypic, and all but one species will be moved to other genera, leaving only Prenanthes purpurea. ...
[n] - genus of North American and Asiatic perennial herbs having pinnatisect leaves small heads of drooping yellowish to purple flowers
genus Prenanthes noun genus of North American and Asiatic perennial herbs having pinnatisect leaves small heads of drooping yellowish to purple flowers; sometimes includes species often placed in genus Nabalus