Plant identification correction

As I will probably never remember every single plant name, pronunciation or technical name on any given day. I will be subject to mistakes. I have been using the name Mountain bluet for a plant in my garden. I might have picked up a common name somewhere, but can't find it in any book so far. I got the Latin name right, Centaurea montana, or more common name, cornflower.

Also found out I do not have Jerusalem Artichoke in my garden - what I thought was that is actually Woodland Sunflower, Helianthus divaricatus. No wonder there weren't any tubers when I dug it up in November!!!

What's the old expression, live and learn? Never too old to learn!!