Sand Dune Phacelia, Silvery Phacelia: Phacelia argentea -
Bolander's Phacelia, Bolander's Scorpion-weed: Phacelia bolanderi -
Capitate Phacelia: Phacelia capitata -
Serpentine Phacelia, Serpentine Scorpionweed: Phacelia corymbosa -
Kaweah River Scorpionweed: Phacelia egena -
Compact Phacelia, Timberline Phacelia: Phacelia hastata var. compacta (Synonyms: Phacelia frigida, Phacelia frigida ssp. frigida, Phacelia hastata ssp. compacta, Phacelia hastata var. dasyphylla, Phacelia nemoralis var. frigida, Phacelia magellanica) -
Silverleaf Phacelia, Silver-leaf Phacelia, Whiteleaf Phacelia: Phacelia hastata var. hastata (Synonyms: Phacelia hastata ssp. hastata, Phacelia hastata var. alpina, Phacelia hastata var. leucophylla, Phacelia leucophylla var. leucophylla, Phacelia leucophylla var. suksdorfii) -
Narrow-sepal Phacelia, Narrow-sepal Scorpion-weed: Phacelia hastata var. leptosepala (Synonym: Phacelia leptosepala) -
Varileaf Phacelia, Varied-leaf Phacelia, Varyleaf Phacelia, Virgate Phacelia, Wand Phacelia: Phacelia heterophylla (Synonyms: Phacelia heterophylla var. heterophylla, Phacelia heterophylla var. virgata) -
Humble Phacelia, Low Phacelia: Phacelia humilis (Synonym: Phacelia humilis var. humilis) -
Leo's Phacelia, Siskiyou Phacelia: Phacelia leonis -
Carson's Phacelia, Threadleaf Phacelia, Thread-leaf Phacelia, Thread-leaf Scorpion-weed: Phacelia linearis -
Mallow-leaved Phacelia, Stinging Phacelia: Phacelia malvifolia -
Changeable Phacelia, Changeable Scorpionweed: Phacelia mutabilis (Synonym: Phacelia heterophylla var. pseudohispida) -
Oregon Phacelia, Shade Phacelia, Woodland Phacelia: Phacelia nemoralis ssp. oregonensis (Synonym: Phacelia nemoralis var. oregonensis) -
Peck's Phacelia: Phacelia peckii -
Tall Phacelia, Tall Scorpionweed, Tall Scorpion-weed: Phacelia procera -
Branched Phacelia, Long-branched Phacelia: Phacelia ramosissima var. ramosissima -
Glabrous Branching Phacelia: Phacelia ramosissima var. subglabra -
Rattan's Phacelia: Phacelia rattanii -
Silky Phacelia: Phacelia sericea var. sericea (Synonyms: Phacelia sericea ssp. sericea, Phacelia seriea var. caespitosa) -
Lacy Scorpionweed, Tansy Phacelia: Phacelia tanacetifolia -
Clay-flat Phacelia: Phacelia thermalis - Collected near Linnton, OR in 1910 by W. Suksdorf. Most likely part of ships ballast.
Spring Phacelia, Umpqua Phacelia: Phacelia verna -