The underside of the leaf has an unmistakeable mealy or grainy look. Yes, they're edible (I believe both raw in salads and as a cooked vegetable).

Now I'm puzzled as to why you asked for an id (using a photo dated 2015) if you already knew its name and had posted about it before? Your plant hasn't got typical Ixora foliage which is why I didn't recognise it. I'm thinking it could be Ixora 'Siam Ribbon' which has curled and distorted foliage. Reading up on its requirements I doubt it will flower in a terrarium as it likes full sun. Siam Ribbon

Thank you kindly to both for your prompt reply and provided links to additional information I do live an hour from my local Home Depot and when I called they stated that the 2 specific plants in question do not have the new QR Code so they scanned the generic barcode and it rang up as assorted tropicals.. no name.. and the price.. lol Typically their plant's labels are spot on so that I can just take a picture and then conduct my own research as to if it would be appropriate for my Zone 5b in WI and a house in the country with an unobstructed North exposure through a bay window.. partially shaded or obstructed South exposure through a patio door .. average home humidity, if not possibly, on the low side I believe.. we do not use the AC during the summer but we do enjoy turning on the heat during the winter lol after all I live in Wisconsin.. (I have 2 Ficus Lyrata, I Yucca Elephantipes, 1 Dracaena Marginata rescued from a friend's black thumb, 1 Variegated Aglaonema possibly 'Silver Queen' she was a rescue from the same friend as well, 1 Dracaena Compacta 'Janet Craig', 3 Crassula Ovatas, and a lovely assortment of succulents all tucked into Al's Gritty Mix and next spring all my woody plants move in to the 5:1:1) uh oh... my apologies for getting off track.. this was the first post I have ever made on any forum In conclusion, I haven't ever come across this uniquely attractive plant before in my area and it certainly caught my eye..! So I am happy I asked here. I regrettably believe it would not be a very good fit for my home. Thank you again.

Thank you so much! It sure seems to be Melilotus alba which is Status: Invasive - ERADICATE! So I dug it up as best I could & threw it in the firepit. It had strong roots & some were left in the very hard ground so I will have to make sure I watch for regrowth. I seem to be finding new invasives all the time. :(