Edit:
Just realized the correct name for the tree is actually maple.
False friend caused mistake because its name is "Ahorn" in German.
Keeping the heading as it is, because it is funny, although it might trigger the Canadians (sorry, dudes!).
Quite a few angiosperms have inconspicuous flowers. All grasses have flowers, but on most species you'll never see them unless you're studying them with a magnifying glass