Adirondack flower-what is it

[peak_bgr]

I can't find it in any flower books I have. I've never seen it before, or since. This was taken on shore of a marshy area in Paul Smiths.

 

[SAR-EMT40]

I'm no expert and I can't make out a lot of detail but the first thing that popped into my head was bull thistle.

Keith

 

[arghman]

ooh! If the plant's leaves are those sawtooth-edged things, almost certainly a cinquefoil & looks like maybe marsh cinquefoil (Potentilla palustris) which is one of the few I haven't seen yet in my travels.

If those leaves & flowers don't belong to the same plant, it could be marsh St. John's wort (Triadenum virginicum) but it looks like there are too many stamens in your photo.

edit: p.s. the rounded three-leafed things on the lower left look maybe like buckbean (Menyanthes trifoliata)

 

[peak_bgr]

I think you're right about the marsh Cinquefoil. That a picture of that flower wasn't in my books.

 

[audrey]

A marsh cinquefoil it is. I sighted one of the little buggers in Maine off Tim Pond Road in Beaver Bog in pre-digital days, and I have no idea where that slide is. Nice pic!