Veronica biloba |
Veronica filiformis |
|
---|---|---|
bilobed speedwell, twolobe speedwell |
creeping speedwell, slender speedwell, thread-stalk speedwell, véronique filiforme |
|
Habit | Annuals. | Perennials. |
Stems | erect, (1–)2–10(–18) cm, eglandular-hairy. |
creeping, 5–50 cm, eglandular- and glandular-hairy. |
Leaves | blade ovate to lanceolate-ovate, (3–)4–12(–20) × (1–)2–6(–12) mm, base cuneate, margins remotely serrate, rarely dentate, apex acute, surfaces glabrate. |
blade suborbiculate, 4–13 × 4–14 mm, base cordate, margins crenate-serrate, teeth (2 or)3–5(or 6) per side, apex rounded, surfaces sparsely eglandular- and/or glandular-hairy. |
Racemes | 1–8, terminal, 20–80 mm, 5–15(–30)-flowered, axis eglandular- and glandular-hairy; bracts lanceolate, 6–9 mm, margins entire, apex acute. |
1–6, terminal, 50–500 mm, 10–20-flowered, axis sparsely eglandular- and/or glandular-hairy; bracts suborbiculate, 4–13 mm. |
Pedicels | straight or scarcely deflexed, erect-spreading to horizontally spreading in fruit, (2–)3–8(–11) mm, shorter than subtending bract, eglandular-hairy, sometimes glandular-hairy, rarely glabrous. |
patent or recurved, (15–)20–30 mm, length 2–5 times subtending bract, eglandular- and glandular-hairy. |
Flowers | calyx lobes (3–)4–7(–9) mm, margins entire, apex acuminate-acute, pairs connate 0.5–1.5 mm, puberulent or glabrate; corolla pale to clear blue, 2–4 mm diam.; stamens 1–2 mm; style 0.4–0.8(–2) mm. |
calyx lobes 4–7 mm, 1.5–2.5 mm wide, apex rounded, sparsely glandular-hairy to glabrate; corolla blue-violet to pale blue and white, 8–14 mm diam.; stamens 2.1–2.5 mm; style 3–4 mm. |
Capsules | slightly compressed in cross section, obcordiform, (2.4–)2.8–4(–4.5) × (3–)3.5–5(–6) mm, apex emarginate, eglandular- and/or glandular-hairy, rarely glabrous. |
compressed in cross section, subglobular, 3.5–5 × 5.5–6.5 mm, apex emarginate, sinus angle 50–90°, absent or almost smooth, glabrous or glandular-ciliate. |
Seeds | (2–)4–6(–10), bright yellow, oblong, cymbiform, (1.4–)1.7–2(–2.2) × (0.7–)1–1.3 mm, 0.7 mm thick, smooth. |
(2–)6–14(–18), ochre, ovoid, flat to ± excavate, 1.3–1.7 × 1–1.3 mm, 0.6–0.8 mm thick, rugose to rugulose. |
2n | = 28 (Asia). |
= 14 (Europe). |
Veronica biloba |
Veronica filiformis |
|
Phenology | Flowering Apr–Jul. | Flowering (Mar–)Apr–Jun(–Aug). |
Habitat | Bare soils, open forests, scree, mountain and alpine meadows, humid places near streams, waste fields, ruins, calcareous and non-calcareous soils. | Moist lawns and meadows, waste fields, stream banks. |
Elevation | (400–)1300–3000 m. ((1300–)4300–9800 ft.) | 0–1000 m. (0–3300 ft.) |
Distribution |
MT; UT; BC; Asia [Introduced in North America]
|
CA; CT; DC; DE; ID; MD; MI; NY; OH; OR; PA; VT; WA; WV; BC; ON; QC; Eurasia [Introduced in North America]
|
Discussion | Most reports of Veronica biloba pertain to V. argute-serrata. There are gatherings from potentially mixed populations (for example, Mt. Baldy, British Columbia, Lomer 97-118, UBC). Studies on phenotypic plasticity in these two species are necessary to ascertain the diagnostic characters. Veronica intercedens Bornmüller, native to western Asia, was recently reported from Idaho. It is most similar to V. biloba, distinguished by a large calyx with broadly ovate lobes (3–5 mm versus 2–3.5 mm), the pairs joined by more than one half. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Veronica filiformis is self-incompatible. In the flora area, plants seldom produce capsules; it is dispersed by stem cuttings. The species is native to subalpine meadows in the Caucasus and northern Turkey. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 321. | FNA vol. 17, p. 320. |
Parent taxa | Plantaginaceae > Veronica | Plantaginaceae > Veronica |
Sibling taxa | ||
Name authority | Linnaeus: Mant. Pl. 2: 172. (1771) | Smith: Trans. Linn. Soc. London 1: 195. (1791) |
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