202 SCROPHULARIACEAE. Vou. IIT. 
7. Veronica serpyllifélia L. Thyme-leaved 
Speedwell. Fig. 3802. 
Veronica serpyllifolia L. Sp. Pl. 12. 1753. 
Perennial, puberulent or glabrous; stems slender, 
decumbent, branched, the branches ascending or 
erect, 2-10’ high. Leaves all opposite and petioled, 
or the uppermost sessile, oblong, oval, or ovate, 4’-3’ 
long, crenulate or entire; flowers in short narrow 
racemes at the end of the stem and branches; pedi- 
cels equalling or longer than the calyx, usually shorter 
than the bractlets; corolla blue with darker stripes, 
sometimes white, 2’-4” broad; capsule broader than 
high, broadly obcordate or emarginate at the summit, 
about 1” long, about equalling the calyx; seeds flat, 
numerous. 
In fields and thickets, Labrador to Alaska, south to 
Georgia, New Mexico and California. Also in Europe, 
Asia and South America. Ascends to 2600 ft. in the 
Catskills. Paul’s-betony. April—Aug. 
Veronica humifiisa Dickson, differing in larger flow- 
ers and more pubescent inflorescence, is apparently a . 
northern race of this species, also occurring in Europe. 
8. Veronica peregrina L. Purslane Speedwell. 
Neckweed. Fig. 3803. 
Veronica peregrina L. Sp. Pl. 14. 1753. 
Annual, glabrous, or glandular-puberulent; stem 
erect or ascending, simple or branched, 3’-12’ high. 
Leaves oblong, oval, linear or slightly spatulate, 3-10” 
long, obtuse or acutish, the lowest opposite, short- 
petioled, or sessile, broader than the upper and usually 
denticulate, the upper alternate, sessile, mostly entire, 
each with a short-pedicelled flower in its axil; flowers 
nearly white, about 1” broad; pedicels much shorter 
than the calyx; capsule nearly orbicular, obcordate, 
usually a little shorter than the calyx, 1-13” high, 
many-seeded, the seeds flat. 
In moist places, and common as a weed in cultivated 
soil, Nova Scotia to British Columbia, south to Florida, 
Mexico and California. Also in Central and South Amer- 
ica, distributed as a weed in the Old World. May-—Oct. 
g. Veronica arvénsis L. Corn or Wall 
Speedwell. Fig. 3804. 
Veronica arvensis L. Sp. Pl. 13. 1753. 
Annual, pubescent; stem slender, at first sim- 
ple and erect, at length much branched and dif- 
_ fuse, 3-10’ long. Lower leaves ovate or oval, 
opposite, obtuse at both ends, crenate or crenu- 
late, 2-6” long, the lowest petioled; upper leaves 
sessile, alternate, ovate or lanceolate, acute or 
acutish, commonly entire, each with a short pedi- 
celled minute flower in its axil; pedicels shorter 
than the calyx; corolla blue, or nearly white, 1” 
broad or less; capsule broadly obovate, obcordate, 
1” high. 
In fields, woods and waste places and in culti- 
vated soil, Nova Scotia to Ontario and Minnesota, 
south to Florida, Kansas and Texas. Also in Ber- 
muda. Naturalized from Europe. Native also of 
Asia. March-Sept. 
