'Shimmer' Evening Primrose (Oenothera fremontii)

Credit: http://www.highcountrygardens.com
article: High Country Gardens Review 		Other images from this article
'Nearly Red' Pineleaf Beardtongue (Penstemon) Grassleaf Mat Daisy - 3 'Mountain Flame' Hummingbird Trumpet (Zauschneria) 'Shimmer' Evening Primrose (Oenothera fremontii) 'Shades of Orange' Hummingbird Mint (Agastache)
'Shimmer' Evening Primrose (Oenothera fremontii), http://www.highcountrygardens.com