American Speedwell, American Brooklime: Veronica americana - Perennial. Racemes in axils of opposite leaves. All leaves with petioles.
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) - Perennial. Racemes in axils of opposite leaves. Most leaves without petioles (sometimes on lowest leaves.
Common Speedwell, Corn Speedwell, Field Speedwell, Wall Speedwell: Veronica arvensis - Annual. Racemes terminal. Leaves largely ovate, less than twice as long as wide.
Bilobed Speedwell, Twolobe Speedwell, Two-lobe Speedwell: Veronica biloba (Synonym: Pocilla biloba) - Annual.
Chain Speedwell: Veronica catenata (Synonym: Veronica connata) -
Cusick's Speedwell: Veronica cusickii - Perennial. Racemes terminal. Flowers deep blue, 8-13 m wide. Elongate style, 6-10 mm long.
Threadstalk Speedwell, Thread-stalk Speedwelll: Veronica filiformis -
Ivy Speedwell, Ivyleaf Speedwell, Ivy-leaf Speedwelll: Veronica hederifolia (Synonym: Veronica hederaefolia) -
Common Gypsyweed, Common Speedwell, Heath Speedwell, Herbal Speedwell, Paul's Betony: Veronica officinalis (Synonyms: Veronica officinalis var. officinalis, Veronica officinalis var. tournefortii, Veronica tournefortii) -
Purslane Speedwell: Veronica peregrina var. peregrina -
Hairy Purslane Speedwell, Purslane Speedwell: Veronica peregrina ssp. xalapensis (Synonyms: Veronica peregrina var. xalapensis, Veronica sherwoodii, Veronica xalapensis) - Annual. Racemes terminal. Leaves linear, oblong, or lanceolate, more than 3 times longer than wide.
Birdeye Speedwell, Bird-eye Speedwell, Persian Speedwell: Veronica persica (Synonyms: Pocilla persica, Veronica buxbaumii, Veronica persica var. aschersoniana, Veronica persica var. corrensiana) -
Grass-leaf Speedwell, Marsh Speedwell, Skullcap Speedwell: Veronica scutellata (Synonym: Veronica scutellata var. villosa) -
Brightblue 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) - Perennial. Racemes terminal. Short style, 1-3 mm long.
Thymeleaf Speedwell, Thyme-leaved Speedwell: Veronica serpyllifolia ssp. serpyllifolia (Synonyms: Veronica serpyllifolia var. nummularioides, Veronica serpyllifolia var. serpyllifolia, Veronicastrum serpyllifolium) -
Three-leaved Speedwell: Veronica triphyllos - Annual. Flowers deep blue, 6-9 mm wide. Capsule wider than high.
Alpine Speedwell, American Alpine Speedwell, Hairy Speedwell: Veronica wormskjoldii var. wormskjoldii (Synonyms: Veronica alpina, Veronica alpina var. alterniflora, Veronica alpina var. cascadensis, Veronica alpina var. geminiflora, Veronica alpina var. nutans, Veronica alpina var. terrae-novae, Veronica alpina var. unalaschcensis, Veronica nutans, Veronica stelleri var. glabrescens, Veronica wormskjoldii, Veronica wormskjoldii ssp. alterniflora) - Perennial. Racemes terminal. Short style, 1-3 mm long. Capsule higher than wide.