Sorry, no pic---this wildflower is blooming all over the Tennesse Valley right now. Bright yellow single daisy-like flowers, on robust plants anywhere from 6" to about 6' tall, depending on how many times the roadside's been cut this summer. This plant branches a lot, and the leaves are very toothed. I thought it was a coreopsis, but it doesn't look like any of the ones I can find pics of. Suggestions?
Rudbeckia? Definitely something in the Aster family.....
Does it look anything like this?: http://botu07.bio.uu.nl/images/Rots/Coreopsis%20lanceolata%2098BL00817%20d.jpg
Or maybe it's the perennial sunflower? Those get pretty tall.
Marty, it looks very much like that---what is it? I'll look at one up-close and personal to be sure, and a look at the foliage would help, but if you can give me a name I'll do the rest.
It's coreopsis lanceolata...They can get pretty tall if they are growing among other tall items...like a field of grass. Here's a descent link for this plant: http://www.americanmeadows.com/bulk_ind_detail.cfm?itemid=78
Or maybe it's Heliopsis? http://www.badbear.com/dkramb/wildflowers/HeliopsisHelianthoides.html
Okay, the bloom looks more like the Heliopsis, but what I can see of the foliage doesn't. My plant has narrow willow-shaped leaves, slightly toothed. The stems are woody and reddish, with the older material being redder than the new growth. The petals are very soft, like those of a cosmos, as opposed to petals like those of a rudbeckia, if that makes any sense. The leaves are smooth, not fuzzy.
Hmmm...I'm not sure then :( The description you give doesn't match anything I've seen myself.