Veronica serpyllifolia |
Veronica peregrina |
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thyme-leaf speedwell |
neckweed, purslane speedwell, véronique voyageuse |
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Habit | Perennials. | Annuals. |
Stems | creeping to ascending, 5–40 cm, scattered eglandular hairs only, often also with glandular hairs, sometimes glabrate. |
erect or ascending, (2.5–)4–25(–35) cm, glabrous or densely glandular-hairy. |
Leaves | 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. |
blade oblanceolate proximally, narrowly oblong distally, 5–28(–35) × 2–6(–10) mm, 3–10 times as long as wide, base cuneate, margins entire or dentate distally, apex acute, surfaces glabrous or densely glandular-hairy. |
Racemes | 1, terminal, 50–100 mm, 10–30(–60)-flowered, axis eglandular- and glandular-hairy; bracts oblong, 4–7 mm. |
1, terminal, sometimes 1 or 2 axillary, 20–200 mm, (2–)5–40-flowered, axis glabrous or densely glandular-hairy; bracts spatulate to linear-lanceolate, 3–22 mm. |
Pedicels | erect, 2–5 mm, 4–6 mm in fruit, shorter than subtending bract in flower, eglandular- and, sometimes, glandular-hairy. |
erect, 0.2–1(–2) mm, much shorter than subtending bract, glabrous or densely glandular-hairy. |
Flowers | 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. |
calyx lobes (2–)3–6 mm, 0.9–2 mm wide, apex obtuse to acute, glabrous or densely glandular-hairy; corolla white or pale pink, 2–5 mm diam.; stamens 1 mm; style 0.1–0.5 mm. |
Capsules | compressed in cross section, obcordiform, 2.5–3.5 × 4–5.5 mm, wider than long, apex acutely emarginate, glandular-ciliate, otherwise glabrate. |
strongly compressed in cross section, obcordiform, 2.5–5 × 2.5–6 mm, apex ± emarginate, glabrous. |
Seeds | 50–72, brown, ellipsoid, flat, 0.6–1.1 × 0.4–1 mm, 0.2 mm thick, smooth. |
12–140, yellow or pale brown, oblong, flat, 0.6–1.6 × 0.4–0.9 mm, 0.1–0.2 mm thick, smooth. |
2n | = 14. |
= 52. |
Veronica serpyllifolia |
Veronica peregrina |
|
Phenology | Flowering Apr–Aug. | Flowering (Feb–)Mar–Jun(–Nov). |
Habitat | River banks, wet places, moist meadows, shady forests. | Moist waste lands, gardens, roadsides, stream banks, pond shorelines, vernal pools, other cultivated land. |
Elevation | 0–3300 m. [0–10800 ft.] | 0–700(–3000) m. [0–2300(–9800) ft.] |
Distribution |
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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AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK; YT; Central America; South America; Mexico (Baja California, Baja California Sur, Chihuahua, México, Sonora); Eurasia; Australia
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Discussion | 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.) |
Stem indument of Veronica peregrina has been used to distinguish var. xalapensis with a glandular-hairy stem (F. W. Pennell 1935), a variety that seems to be confined to drier places than the type variety. Variety laurentiana is also differentiated from var. peregrina in having a glandular-hairy stem, fleshier leaves, shorter stamens, smaller corollas, and slightly differently shaped capsules (Frère Marie-Victorin and J. Rousseau 1940). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 312. | FNA vol. 17, p. 314. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | V. humifusa, V. serpyllifolia var. decipiens, V. serpyllifolia subsp. humifusa, V. serpyllifolia var. humifusa, V. tenella | V. peregrina var. laurentiana, V. peregrina subsp. xalapensis, V. peregrina var. xalapensis, V. sherwoodii, V. xalapensis |
Name authority | Linnaeus: Sp. Pl. 1: 12. (1753) | Linnaeus: Sp. Pl. 1: 14. (1753) |
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