Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
Habitat: Moist meadows and shores, from the lowlands to the subalpine.
Flowers: May-August
Origin: Both native and introduced
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies
Perennial from branching, creeping rhizomes, the stems 1-3 dm. long, finely puberulent, often producing prostrate, lower branches, otherwise simple.
Leaves opposite, elliptic to broadly ovate, 1-2.5 cm. long and 0.5-1 cm. wide, glabrous, entire or slightly toothed, the lower often short-petiolate, the others sessile.
Flowers on short pedicels in a loose, elongate, terminal raceme, the upper subtending bracts alternate; sepals 4; corolla bright blue to white, 4-8 mm. wide, rotate, 4-lobed, the upper lobe the largest; style 2-3.5 mm. long; stamens 2.
Capsule 3-4 mm. high, broader than high, notched, finely glandular-pubescent,
Publication: Sp. Pl. 1: 12. 1753.
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var. humifusa – thyme-leaved speedwell
Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast. -
var. serpyllifolia – thyme-leaved speedwell Occurring west of the Cascades crest in Washington; Alaska to Oregon, east to Montana, the Great Plains, and eastern North America.
PNW Herbaria: Specimen records of Veronica serpyllifolia in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Veronica serpyllifolia checklist entry.
OregonFlora: Veronica serpyllifolia information.
E-Flora BC: Veronica serpyllifolia atlas page.
CalPhotos: Veronica serpyllifolia photos.
USDA Plants: Veronica serpyllifolia information.
