Where does “plantano” come from?

plantano (English) comes from Spanish plátano, from Latin platanus, from Greek πλάτανος, from Ancient Greek πλάτανος, from Ancient Greek πλατύς, from Proto-Indo-European pléth₂us, from Proto-Indo-European pleth₂- — flat.

Ancestry of “plantano”, step by step

Step	Language	Word	Meaning
1	Spanish	plátano	banana; plantain; sycamore, plane
2	Latin	platanus	planetree, sycamore
3	Greek	πλάτανος	plane tree
4	Ancient Greek	πλάτανος	planetree
5	Ancient Greek	πλατύς	wide, broad; flat, level; broad-shouldered
6	Proto-Indo-European	pléth₂us	flat, broad
7	Proto-Indo-European	pleth₂-	flat

Every word from Proto-Indo-European pleth₂- →Every word from Proto-Indo-European pléth₂us →Every word from Ancient Greek πλατύς →