Known as Pink Pavonia, but also as Stinging Pavonia, this is a wide-ranging weed from tropical Africa.  Photo from near Songea, Tanzania.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/92252798@N07">Dick Culbert</a> from Gibsons, B.C., Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/92252798@N07/25504816473/">Pavonia urens</a>