Where does “Erythrina” come from?

Erythrina (English) comes from Translingual Erythrina, from Ancient Greek ἐρυθρός, from Proto-Hellenic *erutʰrós.

Ancestry of “Erythrina”, step by step

Step	Language	Word	Meaning
1	Translingual	Erythrina	—
2	Ancient Greek	ἐρυθρός	reddish, red
3	Proto-Hellenic	*erutʰrós	—

Erythrina — Etymology, Origin & Word History | Etymology Explorer