Baker, M. Rouston, C. (2005) Lincoln National Forest, Inventory Completion Report, Field Notes. Botanical Survey-Rare Plants in the Last Chance/Sitting Bull Falls Area, part 2: Upper Last Chance Canyon. Guadalupe RD, Lincoln NF, USFS. 2 p.

• Aquilegia chrysantha var. chaplinei
• Penstemon cardinalis ssp. Regalis
• Streptanthus sparsiflorus