hmmmm I have a small hickory in the back and a small one was growing next door. There was also a pokeweed i was trying to get rid of about 3 feet away from this spot. I hope it is niether of those. I was hoping it could be deciduous magnoila.... Thats what i thought it was but i cannot be sure. There are a few mags in the neighbourhood.

If you want additional Darlow Enigmas, root cuttings. Chances are your seedlings are babies of that miserable wild rose that is a pest. Darlows Enigma is a found rose so no one know the parentage. Any seedlings of Dalows Enigma would not be the same rose.

its just a guess ... try the peeps in the name that plant forum.. if we fail here ... are they ... i dont know the word ... like emery cloth??? ...leathery??? i have them in my yard ... never really IDd them ... this is my other guess ... ken https://www.google.com/search?q=hackberry&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMIirjhx5DyxgIVxGw-Ch1q8gM-&biw=918&bih=745&dpr=0.9#tbm=isch&q=buckthorn+leaves

They look the "regular" type. Ants can bring them around. But if yours are indoors then most likely came off other plants. Should be easy to control manually, between the fingers. Just keep checking for any new hatchings.