Veronica americana

Schweinitz ex Bentham in A. P. de Candolle and A. L. P. P. de Candolle

Prodr. 10: 468. 1846.

Common names: American brooklime véronique d'Amérique
Synonyms: Veronica beccabunga var. americana Rafinesque
Treatment appears in FNA Volume 17. Treatment on page 313. Mentioned on page 306.

Perennials. Stems decumbent or ascending, 5–50 cm, glabrous. Leaves: petiole 2–6 (–10) mm; blade ovate to lanceolate, widest proximal to middle, (5–) 30–50 (–100) × (3–) 7–20 (–30) mm, 2–4 times as long as wide, base truncate, rounded or almost cordate, abruptly turning into petioles, margins entire or serrate, apex obtuse-orbicular or acute, surfaces glabrous. Racemes 1–8, axillary, 30–100 mm, (3–) 10–30-flowered, axis glabrous; bracts lanceolate, 3–6 mm. Pedicels patent, 3–10 (–12) mm, equal to ± longer than subtending bract, glabrous. Flowers: calyx lobes 2–5 (–6) mm, apex acute, glabrous; corolla pink or sky blue, 4–10 mm diam.; stamens 2–4 mm; style (1.7–) 2.5–3.5 (–4) mm. Capsules slightly compressed in cross-section, globular, 2–4 × 3–5 mm, apex not or ± emarginate, glabrous. Seeds 20–30, brownish, ellipsoid to ovoid, indistinct-compressed or planoconvex, 0.5–0.7 × 0.3–0.6 mm, thickness varies due to compression in capsule, indistinctly wrinkled or ± rugose. 2n = 36.


Phenology: Flowering May–Aug.
Habitat: Slowly flowing waters, banks, sand bars, gravel flood plains, moist soils, springs, ditches, swamps, marshes.
Elevation: 0–3600 m.

Distribution

Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Ark., Calif., Colo., Conn., Del., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico, Asia (Japan), Asia (Russia)

Discussion

Although difficult to separate, Veronica beccabunga and V. americana are maintained as species here. Evidence suggesting separate species status is different ploidy level (the tetraploid level is rare in V. beccabunga) and the occurrence of V. americana in more natural habitats.

Selected References

None.

Lower Taxa

None.
... more about "Veronica americana"
acute +  and obtuse-orbicular +
Dirk C. Albach +
Schweinitz ex Bentham in A. P. de Candolle and A. L. P. P. de Candolle +
alternate +, opposite +, whorled +, helical +  and subopposite +
cordate;rounded +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
proximal;middle +
ovate;lanceolate +
not leathery +  and not fleshy +
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
rotate +  and campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
globular +  and compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
darker +, reddish +  and lighter +
American brooklime +  and véronique d'Amérique +
blue +  and pink +
campanulate +, short-tubular +  and rotate +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Mexico +, Asia (Japan) +  and Asia (Russia) +
drupe-like +
0–3600 m. +
curved +  and straight +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 +  and 4 +
Slowly flowing waters, banks, sand bars, gravel flood plains, moist soils, springs, ditches, swamps, marshes. +
axillary +  and terminal +
alternate +  and opposite +
persistent +  and deciduous +
linear;suborbiculate or triangular-cordate +
serrate +  and entire +
palmatifid +, pinnatifid +  and lobed +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
more or less longer +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5 +  and 4 +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering May–Aug. +
(3-)10-30-flowered +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
minute +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
rugose +  and wrinkled +
ellipsoid +  and ovoid indistinct-compressed or planoconvex +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
eglandular +  and glandular +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;decumbent +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +
pointed +  and capitate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Veronica beccabunga var. americana +
Veronica americana +
Veronica +
species +
gibbous +  and not spurred +
annual +, biennial +  and perennial +
subshrub +  and herb +