Purply houseplant

This was another plant foisted upon me by a near-stranger (friend of a friend) while I was protesting, but it ended up getting big and being interesting. I've looked at sets of houseplant photos for it, but haven't found it. I'm hoping someone will know.

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I got feedback!

Setcreasea pallida Purple Heart Commelinaceae

Thanks to people knowing everything on facebook! :-) http://www.plantoftheweek.org/week276.shtml

Volunteer tree, my back yard

This tree is in its fourth or fifth year, having come up all voluntarily. This year it's flowered/blossomed, right out of a branch, and maybe there's enough now for someone to recognize it. It's about three and a half feet high, with purplish bark (as a baby tree), so I thought maybe plum? But the blossom doesn't look like plum.

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2013 UPDATE!

The tree is five feet tall, has lots of blossoms. I'm putting the 2013 photos here: