Etymon
pie-bhleh3-protoindoeuropean-s-protoindoeuropean-bhleh3s-protoitalic-flos-latin-flos-protoindoeuropean-eh1ti-protoindoeuropean-yeti-protoindoeuropean-eh1yeti-protoitalic-eo-latin-eo-latin-floreo-protoindoeuropean-dheh1der
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.