Bolander's Phacelia, Bolander's Scorpion-weed: Phacelia bolanderi -
Capitate Phacelia: Phacelia capitata -
Serpentine Scorpionweed, Serpentine Phacelia: Phacelia corymbosa -
Kaweah River Scorpion Weed: Phacelia egena -
Purple Phacelia: Phacelia hastata var. alpina - ?
Compact Phacelia, Silverleaf Phacelia, Silver-leaf Phacelia, Timberline Phacelia, Whiteleaf Phacelia: Phacelia hastata var. compacta (Synonyms: Phacelia frigida, Phacelia hastata ssp. frigida, Phacelia hastata var. dasyphylla, Phacelia magelanica, Phacelia nemoralis var. frigida) -
Silverleaf Phacelia, Silver-leaf Phacelia, White-leaf Phacelia: Phacelia hastata var. hastata (Synonyms: Phacelia hastata var. alpina, Phacelia hastata var. hastata, Phacelia hastata var. leptosepala, Phacelia hastata var. leucophylla, Phacelia leptosepala, Phacelia leucophylla var. leucophylla, Phacelia leucophylla var. suksdorffii) -
Narrow-sepal Phacelia, Narrow-sepal Scorpion-weed: Phacelia hastata var. leptosepala (Synonym: Phacelia leptosepala) - This is a Washington designation
Varileaf Phacelia, Variedleaf Phacelia, Virgate Phacelia: Phacelia heterophylla ssp. virgata (Synonyms: Phacelia heterophylla var. heterophylla, Phacelia virgata) -
Humble Phacelia, Low Phacelia: Phacelia humilis var. humilis (Synonym: Phacelia humilis) -
Carson's Phacelia, Threadleaf Phacelia, Thread-leaf Phacelia, Thread-leaf Scorpion-weed: Phacelia linearis -
Dwarf Scorpion-weed, Least Phacelia, Small Phacelia: Phacelia minutissima - Annual.
Changeable Phacelia, Changeable Scorpionweed, Changeable Scorpion Weed: 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 Scorpion-weed: Phacelia procera -
Branching Phacelia: Phacelia ramosissima var. eremophila (Synonym: Phacelia eremophila) -
Branched Phacelia, Long-branched Phacelia: Phacelia ramosissima var. ramosissima -
Branching Phacelia, Glabrous Branching Phacelia: Phacelia ramosissima var. subglabra -
Silky Phacelia: Phacelia sericea var. sericea (Synonyms: Phacelia sericea ssp. sericea, Phacelia sericea var. caespitosa) -
Spring Phacelia, Umpqua Phacelia: Phacelia verna -