Native Sunflower sp.

On 3 August 2013, a group of us drove out east of Calgary to visit and record all flora and fauna found on the Beynon Ecological Preserve. This land belongs to the Nature Conservancy of Canada. One of the wildflowers that we saw in several places was this native species of Sunflower. I know that there is more than one species, and I'm not sure exactly which one this is. Apparently, two species were seen on that trip: Common Sunflower (Helianthus annuus), which was seen along the road approaching Beynon, and Stiff/Rhombic-leaved Sunflower (Helianthus pauciflorus/subrhomboideus).
I think it is the Stiff/Rhombic-leaved Sunflower.

"Beynon is primarily a private 500+ acre ecological preserve. Located within a deeply sculpted portion of the Rosebud River valley, the area is recognized as being regionally significant. Due to its unique topography, picturesque valley setting, and relative rarity in terms of biodiversity, Beynon protected its surrounding area by permanently protecting over 400 acres (1.6 km2) from development. This protection was achieved by way of an outright donation of land by Beynon's founding family, who still own most of the unincorporated area called Beynon. The Nature Conservancy of Canada were the recipients of the 400-acre (1.6 km2) land donation in 1999." From Wikipedia.

By the way, the Beynon Canyon was featured in the cemetery scene from the 1978 film Superman: The Movie.

en.wikipedia.org/wiki/Beynon,_Alberta