Do you know what species this is? 

If so, please let me know, I am putting together a book of my nature photography and need help identifying the various plants and flowers.  

I will highlight the first reader that identifies this correctly! - Thanks!   

Nathaniel Nickels Photography - www.natenickels.smugmug.com & www.facebook.com/5centphotos/
A grove of bright yellow cottonwood trees are behind a fence and golden meadow on a cobalt blue sky day in Custer State Park in South Dakota
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
A panoramic photograph of an idyllic scene of yellow cottonwood trees, a golden meadow, cobalt blue sky framed by an old fence in Custer State Park in South Dakota
An abandoned mine from the 19th century sits atop its tailings in the Rocky Mountains between Ouray and Silverton Colorado.
Old crossbucks still stand where an abandoned railroad crossing once existed in the mountains of SE Colorado.
A lone tree sits on a hillside in a golden meadow under a cobalt blue sky in Custer State Park in South Dakota
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
Pieces of old wooden wagons from the old west are found, incluing wooden wagon wheels, axles, hubs and tongues of wagons.
See photo in original gallery.