E-Flora BC: Electronic Atlas of the Flora of British Columbia

Veronica serpyllifolia var. humifusa L. (Dicks.) Vahl
thyme-leaved speedwell
Plantaginaceae (Mare's-tail family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Veronica serpyllifolia var. humifusa
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Species Information

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Perennial herb from a creeping rhizome; stems ascending, 10-30 cm tall/long, often decumbent or creeping at the base and producing prostrate, nodally rooting branches, otherwise simple, finely and closely short-hairy, or smooth.
Opposite, often short-stalked below, unstalked above, elliptic to broadly egg-shaped, 1-2.5 cm long, obscurely blunt-toothed to entire, smooth or nearly so.
Inflorescence a terminal bracted raceme, at first compact then elongating and lax, of several to many (to 30) stalked flowers, the stalks finely short-hairy and often also glandular, shorter than the bracts, at least the upper bracts alternate, the lower gradually passing into leaves; corollas bright blue or pale blue to white with darker blue lines, saucer-shaped, 4-8 mm across, irregularly 4-lobed, the lobes much longer than the short tube, the upper lobe largest, the lowest lobe narrower than the others; calyces short-hairy or glandular-hairy, deeply 4-lobed, the lobes oblong to egg-shaped, 2-4 mm long, slightly unequal; styles short, 2-3.5 mm long; stamens 2, exserted, the filaments 1-4 mm long.
Capsules, 3-4 mm long, flattened, heart-shaped, wider than long, distinctly notched at the tip, thinly glandular-hairy; seeds numerous, about 0.7 mm long.
Two varieties occur in BC

1. Axis of inflorescence and flower stalks minutely incurved-hairy, non-glandular; corollas to 5 mm wide; introduced in SW and E BC..................... var. serpyllifolia

1. Axis of inflorescence and flower stalks finely minute-hairy but also with spreading glandular hairs; corollas to 8 mm wide; native throughout BC..................... var. humifusa (Dickson) Vahl

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to wet meadows, fields, streambanks, thickets, open forests and waste places in the lowland, steppe, montane and lower subalpine zones; frequent throughout BC, especially southward; var. humifusa - circumpolar, N to AK, E to NF and S to NH, NY, MI, WI, MN, NM, AZ, CA and MX; Eurasia, var. serpyllifolia - introduced from Europe.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Veronica serpyllifolia var. humifusa

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 1800 1800 1800
Slope Gradient (%)
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 7
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Veronica serpyllifolia subsp. humifusa (Dicks.) Syme

Taxonomic and Nomenclatural Links

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General References