During preparation of manuscript for volume 2A of Intermountain Flora, we recognized the need to publish 11 new combinations and three second-step lectotypifications. The new combinations are: Eremogone fendleri var. plateauensis, E. fendleri var. porteri, E. fendleri var. brevicaulis, and E. kingii var. compacta (Caryophyllaceae), Atriplex gardneri var. robusta (Chenopodiaceae), Corydalis caseana var. brachycarpa (Fumariaceae), Claytonia parviflora var. utahensis (Montiaceae), Argemone parva and Eschscholzia californica var. mexicana (Papaveraceae), and Aquilegia micrantha var. loriae and Ranunculus adoneus var. caespitosus (Ranunculaceae). Second-step lectotypifications are provided for Talinum confertiflorum and Talinum pygmaeum (Montiaceae) and Platystemon termini (Papaveraceae).