UW Burke Herbarium species comparison

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Veronica peregrina

Veronica serpyllifolia

purslane speedwell

thyme-leaved speedwell
Habit Fibrous-rooted annual, the stems erect, 0.5-3 dm. tall, simple or branched below. Perennial from branching, creeping rhizomes, the stems 1-3 dm. long, finely puberulent, often producing prostrate, lower branches, otherwise simple.
Leaves

Principal leaves opposite, linear-oblong to oblanceolate, 0.5-3 cm. long and 1-9 mm. wide, irregularly toothed or entire.

Leaves opposite, elliptic to broadly ovate, 1-2.5 cm. long and 0.5-1 cm. wide, glabrous, entire or slightly toothed, the lower often short-petiolate, the others sessile.
Flowers

Inflorescence terminal, elongate, lax;

bracts alternate, similar to the leaves, gradually reduced upward, each subtending a single, sub-sessile flower;

sepals 4;

corolla white, inconspicuous, 2 mm. wide;

style very short;

stamens 2.

Flowers on short pedicels in a loose, elongate, terminal raceme, the upper subtending bracts alternate;

sepals 4;

corolla bright blue to white, 4-8 mm. wide, rotate, 4-lobed, the upper lobe the largest;

style 2-3.5 mm. long;

stamens 2.
Fruits

Capsule 3-4 mm. high, obcordate.

Capsule 3-4 mm. high, broader than high, notched, finely glandular-pubescent,

Veronica peregrina

Veronica serpyllifolia
Flowering time April-September May-August
Habitat Swales, wet meadows, stream banks, and other moist places, from the lowlands to moderate elevations in the mountains. Moist meadows and shores, from the lowlands to the subalpine.
Distribution
Widely distributed throughout most of Washington; widely distributed throughout North America.
[WildflowerSearch map]
[BONAP county map]
Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Both native (var. xalapensis) and introduced (var. peregrina) varieties Both native and introduced
Conservation status Not of concern Not of concern
Sibling taxa
V. americana, V. anagallis-aquatica, V. argute-serrata, V. arvensis, V. catenata, V. chamaedrys, V. cusickii, V. dissecta, V. filiformis, V. hederifolia, V. ×lackschewitzii, V. longifolia, V. missurica, V. officinalis, V. persica, V. polita, V. regina-nivalis, V. rubra, V. schizantha, V. scutellata, V. serpyllifolia, V. triphyllos, V. verna, V. wormskjoldii
V. americana, V. anagallis-aquatica, V. argute-serrata, V. arvensis, V. catenata, V. chamaedrys, V. cusickii, V. dissecta, V. filiformis, V. hederifolia, V. ×lackschewitzii, V. longifolia, V. missurica, V. officinalis, V. peregrina, V. persica, V. polita, V. regina-nivalis, V. rubra, V. schizantha, V. scutellata, V. triphyllos, V. verna, V. wormskjoldii
Subordinate taxa
V. peregrina var. peregrina, V. peregrina var. xalapensis
V. serpyllifolia var. humifusa, V. serpyllifolia var. serpyllifolia
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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