This green foliage has lasted nearly a month, and counting. It's from a trader joe's grocery flower arrangement just before Easter, and it's showing no signs of death...whereas the flowers died within a week...

Anyone know the name? The stature and color remind me of the citrus tree suckers that grow at the base of those types of trees when they're not pruned, but other than that, nothing comes to mind.

Plus, they didn't sprout any roots or new leaves while in water, but instead have these lone, tiny, pinhead sized pods at the center of most of the leaves' under and topside that have shown some growth, as if an equally tiny stamen emerged.

All in all confused, so your help would be much appreciated!