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thyme-leaf speedwell

Habit Perennials.

creeping to ascending, 5–40 cm, scattered eglandular hairs only, often also with glandular hairs, sometimes glabrate.


blade oblong-lanceolate to ovate, 8–25 × 5–13 mm, 1.5–2.5 times as long as wide, base cuneate, margins subentire or serrulate-crenate, apex rounded to short-acuminate, surfaces glabrate.


1, terminal, 50–100 mm, 10–30(–60)-flowered, axis eglandular- and glandular-hairy;

bracts oblong, 4–7 mm.


erect, 2–5 mm, 4–6 mm in fruit, shorter than subtending bract in flower, eglandular- and, sometimes, glandular-hairy.


calyx lobes 2–3 mm, apex acute, ciliate;

corolla white, blue, or pink, with purple or dark blue veins (except on abaxial lobe), rotate, 5–8 mm diam.;

stamens 2.5–3 mm;

style 2–4 mm.


compressed in cross section, obcordiform, 2.5–3.5 × 4–5.5 mm, wider than long, apex acutely emarginate, glandular-ciliate, otherwise glabrate.


50–72, brown, ellipsoid, flat, 0.6–1.1 × 0.4–1 mm, 0.2 mm thick, smooth.


= 14.

Veronica serpyllifolia

Phenology Flowering Apr–Aug.
Habitat River banks, wet places, moist meadows, shady forests.
Elevation 0–3300 m. (0–10800 ft.)
from FNA
AK; AL; AR; AZ; CA; CO; CT; DC; DE; GA; IA; ID; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; NC; ND; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; TN; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; NL; NS; ON; PE; QC; SK; South America; Mexico (Baja California); Eurasia; Australia
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Alpine plants of Veronica serpyllifolia with bright blue, larger corollas, and smaller, hairier raceme axes have been treated at various ranks under the epithet humifusa. The characters are labile and show intergradations with the typical plants. Veronica serpyllifolia is widespread; it is not clear where it is native.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 312.
Parent taxa Plantaginaceae > Veronica
Sibling taxa
V. agrestis, V. alpina, V. americana, V. anagallis-aquatica, V. argute-serrata, V. arvensis, V. beccabunga, V. biloba, V. catenata, V. chamaedrys, V. copelandii, V. cusickii, V. cymbalaria, V. dillenii, V. filiformis, V. fruticans, V. grandiflora, V. hederifolia, V. longifolia, V. officinalis, V. peregrina, V. persica, V. polita, V. scutellata, V. spicata, V. stelleri, V. sublobata, V. teucrium, V. triloba, V. triphyllos, V. undulata, V. verna, V. wormskjoldii
Synonyms V. humifusa, V. serpyllifolia var. decipiens, V. serpyllifolia subsp. humifusa, V. serpyllifolia var. humifusa, V. tenella
Name authority Linnaeus: Sp. Pl. 1: 12. (1753)
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