Introduced wildflowers?

A display of Penstemon flowers on the sunny slope overlooking Wildcat Creek.  I am going to assume that this is Penstemon cobaea which has been previously identified here at Clegg Garden.  Penstemon cobaea is not native to Indiana but rather is a native of the prairies of Kansas and Texas.

A closer look at the Penstemon on the slope.

Link to Penstemon cobaea:

Link to Penstemon cobaea:

Link to reported range of Penstemon cobaea:

Here a growth of Linum, also of unclear species, amongst the Penstemon.  Linum with blue flowers is not reported to be native to Indiana.  Both Penstemon cobaea and Linum lewisii are components of commercially available wildflower mixes which might account for their presence here at Clegg Garden.

Which raises the question of whether plants that are intentionally sown should even be called wildflowers.

Link to Linum perenne lewisii:

Link to Linum perenne/lewisii:

Link to reported ranges of Linum species:

This post is subject to further revision as better identifications are made and more is learned about the history of Clegg Garden.

Photos taken May 22, 2015.