Veronica agrestis
Veronica biloba
field speedwell, green field speedwell, green procumbent speedwell, véronique agreste
bilobed speedwell, twolobe speedwell
creeping to decumbent, 5–25 cm, hairy.
erect, (1–)2–10(–18) cm, eglandular-hairy.
blade elliptic-ovate to oblong, (6–)8–16(–19) × (3–)4–10(–13) mm, base truncate, margins serrate, teeth 4–6(–8) per side, apex obtuse to acute, abaxial surface ± more densely hairy than adaxial.
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.
1–5, terminal, 50–250 mm, 5–15-flowered, axis eglandular-hairy, sometimes glandular-hairy;
bracts elliptic-ovate to oblong, (6–)9–16(–19) mm.
1–8, terminal, 20–80 mm, 5–15(–30)-flowered, axis eglandular- and glandular-hairy;
bracts lanceolate, 6–9 mm, margins entire, apex acute.
deflexed, (5–)6–10(–15) mm, ± shorter than subtending bracts, densely eglandular- and, sometimes, glandular-hairy distally.
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.
calyx lobes linear-lanceolate, (5–)6–7 mm, 2.2–2.6 mm wide, apex rounded, sparsely eglandular- or glandular-hairy;
corolla white or pale pinkish or pale blue, 4–5(–6) mm diam.;
stamens 0.5–1 mm;
style (0.6–)0.9–1.1(–1.2) mm.
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.
± compressed in cross section, ± subglobular, 3.5–4.5(–4.7) × 4.5–6(–6.3) mm, apex emarginate, sparsely glandular-hairy.
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.
6–14, yellow to ochre, globular, cymbiform, 1.3–2.1 × 1–1.6 mm, 0.6–1.1 mm thick, strongly rugose (transversely ribbed).
(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.
= 28 (Europe).
= 28 (Asia).
Veronica agrestis
Veronica biloba
Veronica agrestis is similar to the more frequent V. persica and probably frequently overlooked and to be expected elsewhere. However, it should be noted that it is less common than V. persica or V. polita and always in more humid habitats.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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