Great Basin Phacelia: Phacelia adenophora (Synonym: Miltitzia glanculifera) -
Two Color Phacelia, Two-colored Phacelia: Phacelia bicolor var. bicolor -
Sand Phacelia, Two-color Phacelia: Phacelia bicolor var. leibergii (Synonym: Phacelia leibergii) -
Capitate Phacelia: Phacelia capitata -
Sticky Phacelia: Phacelia glandulifera -
Naked-branch Phacelia, Naked-stemmed Phacelia, Thick-leaved Phacelia: Phacelia gymnoclada (Synonym: Phacelia crassifolia) -
Purple Phacelia, Silverleaf Phacelia: Phacelia hastata var. alpina (Synonym: Phacelia alpina. May also be lumped into Phacelia hastata var. hastata in Washington and on the USDA website.) -
Compact Phacelia, Silverleaf Phacelia, Timberline Phacelia, Whiteleaf Phacelia: Phacelia hastata var. compacta (Synonyms: Phacelia frigida, Phacelia frigida ssp. frigida, Phacelia hastata var. dasyphylla, Phacelia nemoralis var. frigida) -
Silverleaf Phacelia, White-leaf Phacelia: Phacelia hastata var. hastata (Synonyms: Phacelia hastata var. alpina (lumped here in Washington), Phacelia hastata var. leptosepala, Phacelia hastata var. leucophylla, Phacelia leptosepala, Phacelia leucophylla var. leucophylla, Phacelia leucophylla var. suksdorfii) -
Hybrid Phacelia: Phacelia hastata x heterophylla -
Varileaf Phacelia: Phacelia heterophylla ssp. heterophylla (Synonyms: Phacelia heterophylla var. typica, Phacelia sericea var. biennis) -
Varied-leaf Phacelia, Varileaf Phacelia: Phacelia heterophylla ssp. virgata (Synonyms: Phacelia heterophylla var. virgata, Phacelia virgata) -
Humble Phacelia, Low Phacelia: Phacelia humilis (Synonym: Phacelia humilis var. humilis) -
Waterleaf Phacelia: Phacelia hydrophylloides -
Playa Phacelia, Pool Bank Miltitzia: Phacelia inundata (Synonym: Miltitzia parviflora) -
Sticky Phacelia, Sticky Scorpion-weed: Phacelia lenta -
Narrow-sepal Phacelia, Narrow-sepal Scorpion-weed: Phacelia leptosepala (known also as Phacelia hastata var. leptosepala) -
Carson's Phacelia, Threadleaf Phacelia, Thread-leaf Scorpion-weed, Thread-leaf Phacelia: Phacelia linearis -
Owyhee Phacelia: Phacelia lutea var. calva -
Yellow Phacelia: Phacelia lutea var. lutea (Synonyms: Phacelia lutea var. mackenzieorum, Phacelia lutea var. purpurascens) -
Least Phacelia, Dwarf Phacelia: Phacelia minutissima -
Changeable Phacelia, Changeable Scorpion Weed: Phacelia mutabilis (Synonym: Phacelia heterophylla var. pseudohispida) -
Tall Phacelia, Tall Scorpionweed, Tall Scorpion-weed: Phacelia procera -
Solitary Branching Phacelia: Phacelia ramosissima var. eremophila (Synonym: Phacelia eremophila) -
Branched Phacelia, Long-branched Phacelia: Phacelia ramosissima var. ramosissima -
Glabrous Branching Phacelia: Phacelia ramosissima var. subglabra -
Rattan's Phacelia: Phacelia rattanii -
Debeque Phacelia: Phacelia scopulina var. scopulina (Synonym: Miltitzia scopulina, Phacelia lutea var. scopulina) -
Blue Alpine Phacelia, Gray Phacelia, Purplefringe, Silky Phacelia: Phacelia sericea var. ciliosa (Synonyms: Phacelia ciliosa, Phacelia sericea ssp. ciliosa) -
Dwarf Phacelia, Four Part Phacelia, Four-parted Phacelia: Phacelia tetramera (Synonym: Miltitzia pusilla) -
Clay-flat Phacelia, Heated Phacelia, Hot Spring Phacelia: Phacelia thermalis -