Veronica arvensis |
Veronica triphyllos |
|
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corn speedwell, speedwell, véronique des champs, wall speedwell |
finger speedwell, fingered speedwell |
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Habit | Annuals. | Annuals, sometimes biennials. |
Stems | erect to ascending, 1–30(–40) cm, glandular- or eglandular-hairy. |
erect or ascending, often blue tinged, (3–)5–15(–20) cm, densely hairy. |
Leaves | in 3–6 pairs per stem; blade oblong to broadly ovate, (2–)5–14(–35) × (2–)3–10(–18) mm, 2.5 times as long as wide, base truncate, margins crenate-serrate, apex obtuse to rounded, surfaces sparsely eglandular-hairy, rarely also glandular-hairy. |
blade: proximal ovate to triangular, 5–7 × 3–6 mm, distal 8–18 × 8–18 mm, base rounded, margins (proximal) coarsely crenate or (distal) 3–5(–7)-palmatifid, apex obtuse, surfaces sparsely hairy, often glandular. |
Racemes | 1(–3), terminal, 20–150 mm, (5–)15–40(–60)-flowered, axis densely eglandular- and glandular-hairy; bracts linear-oblong, (3.5–)4–6(–10) mm. |
1, terminal, sometimes also 1 or 2 axillary, 30–120(–150) mm, 6–15(–25)-flowered, axis densely eglandular- and glandular-hairy; proximal bracts 5-palmatifid, distal 3-fid, 4–18 mm. |
Pedicels | erect, 0–4 mm, shorter than subtending bract, densely eglandular- and glandular-hairy. |
patent or arcuate-ascending, 4–11(–20) mm, ± equal to subtending bract, length 1–2 times calyx, densely hairy. |
Flowers | calyx lobes (2–)3.5–5(–6) mm, 0.8–2 mm wide, apex acute, glandular-hairy; corolla sky blue to intense blue, 2–4 mm diam.; stamens 0.3–0.5 mm; style (0.2–)0.4–0.6(–1) mm. |
calyx lobes 4–6(–11) mm, apex obtuse, glandular-hairy; corolla deep blue, 5–10 mm diam.; stamens 0.9–1.7 mm; style (0.5–)0.7–1.5(–2) mm. |
Capsules | compressed in cross section, obcordiform, 2–4 × 2.5–5 mm, apex markedly emarginate, glandular-ciliate, otherwise glabrous. |
± inflated basally, compressed distally in cross section, obcordiform, 4–5(–10) × 4.5–6.5(–8) mm, apex emarginate, glandular-hairy. |
Seeds | 10–30, yellowish, ovoid, flat, 0.7–1.7 × 0.4–1 mm, 0.2–0.4 mm thick, rugose. |
14–22(–35), dark brown or blackish, subglobular, cymbiform, 1–2.2 × 0.7–2 mm, 0.4–0.9 mm thick, ± rugulose to cristate. |
2n | = 16. |
= 14 (Eurasia). |
Veronica arvensis |
Veronica triphyllos |
|
Phenology | Flowering (Feb–)Mar–Jun(–Oct). | Flowering (Feb–)Mar–May(–Jul). |
Habitat | Disturbed sites, lawns, fields, open forests, scrub, grasslands, rocky sites, coasts. | Pine forests, stony pastures, rocky banks, sandy fields, gardens, roadsides, rarely calcareous soils. |
Elevation | 0–2900 m. (0–9500 ft.) | 100–1000 m. (300–3300 ft.) |
Distribution |
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; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; BC; NB; NF; NS; ON; PE; QC; YT; Atlantic Islands; Pacific Islands; Greenland; Africa; Eurasia; Australia [Introduced in North America; introduced also in Mexico, Central America]
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CA; ID; KS; MO; OK; OR; WA; Eurasia [Introduced in North America] |
Source | FNA vol. 17, p. 317. | FNA vol. 17, p. 315. |
Parent taxa | Plantaginaceae > Veronica | Plantaginaceae > Veronica |
Sibling taxa | ||
Name authority | Linnaeus: Sp. Pl. 1: 13. (1753) | Linnaeus: Sp. Pl. 1: 14. (1753) |
Web links |
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