Wildflower having vibrant deep pink tubular evening-blooming flowers; found in sandy and desert areas from southern California to southern Colorado and into Mexico WordNet 3.0 & Open English WordNet

Mirabilis multiflora is a species of flowering plant in the four o'clock family known by the common name Colorado four o'clock that is native to the southwestern United States from California to Colorado and Texas, as well as far northern Mexico, where it grows in mostly dry habitat types in a number of regions. Wikipedia