Any ideas on this one. It's a summer-flowering perennial around 1m tall. I'm guessing it's from the Americas as that was the theme of the area of the botanic garden in which it was growing. The effect is rather Penstemon-like but the flower doesn't seem quite right for that. Thanks
Looks like Chilopsis linearis. Chilopsis - Wikipedia chilopsis linearis - Google Search https://www.wildflower.org/plants/result.php?id_plant=chli2