American Brooklime, American-brooklime, American Speedwell: Veronica americana -
Blue Speedwell, Water Pimpernel, Water Speedwell: Veronica anagallis-aquatica (Synonyms: Veronica anagallis, Veronica comosa, Veronica comosa var. glaberrima, Veronica comosa var. glandulosa, Veronica connata ssp. glaberrima, Veronica connata var. glaberrima, Veronica connata var. typica, Veronica glandifera, Veronica grandiflora, Veronica x lackschewitzii, Veronica micromeria, Veronica salina) -
Small Speedwell, Common Speedwell, Corn Speedwell, Wall Speedwell: Veronica arvensis -
Chain Speedwell: Veronica catenata (Synonym: Veronica connata) -
Germander Speedwell: Veronica chamaedrys -
Cusick's Speedwell: Veronica cusickii - Flowers appear to have 4 petals, with the lower one larger. Stamens often twisted. Fleshy stems and lightly toothed, opposite leaves. Flower stems arise from leaf axils.
Threadstalk Speedwell, Thread-stalk Speedwell: Veronica filiformis -
Ivy Speedwell, Ivy-leaf Speedwell: Veronica hederaefolia -
Long-leaved Speedwell: Veronica longifolia -
Western Mountain Kittentails, Columbia Synthyris, Starry Tailed Kittentails, Tailed Kittentails: Veronica missurica ssp. stellata (Synonyms: Synthyris missurica ssp. stellata, Synthyris stellata) -
Common Speedwell, Heath Speedwell, Herbal Speedwell, Paul's Betony: Veronica officinalis (Synonyms: Veronica officinalis var. officinalis, Veronica officinalis var. tournefortii, Veronica tournefortii) -
Purslane Speedwell, Hairy Purslane Speedwell: Veronica peregrina ssp. xalapensis (Synonyms: Veronica peregrina var. xalapensis, Veronica sherwoodii, Veronica xalapensis) -
Persian Speedwell, Bird-eye Speedwell: Veronica persica (Synonyms: Veronica persica var. aschersoniana, Veronica persica var. corrensiana, Veronica persica var. persica) -
Round-leaved Kittentails, Snowqueen, Snow Queen: Veronica regina-nivalis (Synonyms: Synthyris reniformis, Synthyris reniformis var. reniformis) -
Besseya, Red Coraldrops, Red Kittentails: Veronica rubra (Synonyms: Besseya rubra, Synthyris rubra)
Marsh Speedwell, Skullcap Speedwell, Grass-leaf Speedwell: Veronica scutellata (Synonym: Veronica scutellata var. villosa) -
Brightblue Speedwell, Thyme-leaf Speedwell, Thyme-leaved Speedwell: Veronica serpyllifolia ssp. humifusa (Synonyms: Veronica humifusa, Veronica serpyllifolia var. borealis, Veronica serpyllifolia var. humifusa, Veronica tenella, Veronicastrum serpyllifolium ssp. humifusum) -
Thyme-leaf Speedwell, Thyme-leaved Speedwell: Veronica serpyllifolia ssp. serpyllifolia (Synonyms: Veronica serpyllifolia var. nummularioides, Veronica serpyllifolia var. serpyllifolia, Veronicastrum serpyllifolium) -
American Alpine Speedwell, Alpine Speedwell, Hairy Speedwell: Veronica wormskjoldii (Synonyms: Veronica alpina, Veronica wormskjoldii ssp. alterniflora, Veronica wormskjoldii var. wormskjoldii) -