We have those trees here in Denver, but they aren't native. I call them "bean trees" because it looks like they grow giant foot long green beans, but really they are Chinese Somethingorother. Cities imported them at one point for landscaping. They also imported trees of heaven, which are now an invasive species here, and the females smell like pee. XD There is a male one right outside my balcony so luckily no stink, but volunteer plants from seeds everywhere!