<human>:  Why is the genus ‘erythrina’ called erythrina?
<bot>: The genus name erythrina comes from the Greek word <unk> (erythros), meaning red. The species name <unk> (aristolochia) means aristolochia, which is a genus of plants that contain aristolochic acid, a substance that is toxic and can cause kidney failure. Aristolochia is the genus of the plant that produces the seeds of the genus Erythrina.