The leaves are almost rough like a cat's tongue. They grow about 3' tall.
And I'm sure it would help if I had pictures of them blooming (yellow, as I recall), but just in case this is enough to go on...
This guess may be way out in left field ... Does it resemble the plant below which has been referred to as "swamp daisy" by some or do the blooms look more daisy-like? Is the stem square? Do the leaf margins gradually run into the stem (having a wing-like or ridge-like extension beyond the actual point of attachment; a leaf base that seems to continue down the stem)?
Tom, thanks but I don't think that's it. The foliage isn't the same.
The cool thing is though... I have those and didn't know what they were!
So yea! You saved me from posting another 'what is it?' ;-)