crotalaria

noun

cro·​ta·​lar·​ia ˌkrō-tə-ˈlar-ē-ə  ˌkrä- 

1

capitalized : a large genus of usually tropical and subtropical plants of the family Leguminosae with yellow flowers and inflated pods including some containing toxic alkaloids especially in the seeds that are poisonous to farm animals and humans

2

: any plant of the genus Crotalaria

called also rattlebox