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On the Blue-Diamond trail at Distant Hill Nature Trail next to the tower on the power-line ROW. There are dozens of specimens of the common orange spotted form of L. philadelphicum next to the tower, but only one yellow flower variant.

Here is my observation of the common orange form of L. philadelphicum that this yellow variant is growing among.
https://www.inaturalist.org/observations/173314868

My guess that this is a specimen of the very rare spotless yellow variant of Wood lily - Lilium philadelphicum

Here is a link to photos of both the yellow spotted variant found in North Dakota, and the very uncommon yellow unspotted variant found in Alberta, Canada.

https://www.bdlilies.com/ls28.html

When on the linked page click on "READ MORE" below the text to see more about the spotless yellow variant of L. philadelphicum discovered in Alberta, Canada.

FYI- The Saskatchewan Conservation Data Centers (SKCDC) logo is the Yellow Immaculate Lily, (Lilium philadelphicum var. andinum forma immaculata). This is a very rare form of the provincial emblem characterized by lemon-yellow flowers, devoid of the usual dark spots. It is known to occur at only a few locations in Manitoba and Alberta each and about 20 locations in Saskatchewan. There is some evidence that this form exists through some of the Plains and Midwest states as well.

http://biodiversity.sk.ca/organization.htm

This looks like the rare all yellow wood lily (Lilium philadelphicum var. andinum forma immaculata). Can anyone confirm this? Found it near my house and it would be pretty cool if it was! Apparently only 10 found in all of Alberta every year!