Where does “Angiospermae” come from?

Angiospermae (Translingual) comes from Ancient Greek ἀγγεῖον, from Ancient Greek ἄγγος, from Proto-Indo-European h₂éngos, from Proto-Indo-European h₂eng- — curve, bend.

Ancestry of “Angiospermae”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἀγγεῖον	vessel, jar, vase, pail, bucket, box; receptacle,...
2	Ancient Greek	ἄγγος	vessel , vat, pitcher, bucket, pail, wine-bowl
3	Proto-Indo-European	h₂éngos	—
4	Proto-Indo-European	h₂eng-	curve, bend

Every word from Proto-Indo-European h₂eng- →

Angiospermae — Etymology, Origin & Word History | Etymology Explorer