Specimen 1 Fabaceae. Genus and species unknown. No notes, unfortunately. See pics 1-3. Specimen 2 No notes, sorry. See pics 4-5. Specimen 3 Leaves simple, entire, opposite, sessile. Inflorescence with several fluorets. Petals 5, orange. Approximately 12 stamens (too small to discern without hand lens). Pistil with three styles. Sepals 5, exceeding petals. Fruit exceeding sepals. Square stems, no doubt about it. See pics 6-7. Sorry for poor pic quality. Try as I might, my camera would not focus.
Thanks for the IDs! 1 and 3 seem spot on, however, #2 does not match with any Eupatorium spp. in my state. Any other ideas?
I don't think so, as P. camphorata isn't found in my state. I'm thinking Eutrochium maculatum (joe-pye-weed, as someone already said, but the website I used has it in Eutrochium, rather than Eupatorium).
Ah, okay -- Eutrochium now. I don't encounter the genus much out west, and didn't know that one had changed as well (though I should have checked, given the changes in North American Asteraceae)