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 1: Sitting Bull Canyon. Guadalupe RD, Lincoln NF, USFS. 3 p.

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