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neckweed, purslane speedwell

Dillenius' speedwell

Habit Annuals. Annuals.
Stems

erect or ascending, (2.5–)4–25(–35) cm, glabrous or densely glandular-hairy.

erect to ascending, (8–)10–20(–40) cm, glandular- and eglandular-hairy.

Leaves

blade oblanceolate proximally, narrowly oblong distally, 5–28(–35) × 2–6(–10) mm, 3–10 times as long as wide, base cuneate, margins entire or dentate distally, apex acute, surfaces glabrous or densely glandular-hairy.

blade lanceolate to ovate, 7–19(–21) × (3–)5–12 mm, 1–2 times as long as wide, base cuneate, margins (proximal) crenate-dentate or (distal) ±palmatifid, lobes 3–7+, apex of central lobe obtuse, lateral ± acute, surfaces glandular- and eglandular-hairy.

Racemes

1, terminal, sometimes 1 or 2 axillary, 20–200 mm, (2–)5–40-flowered, axis glabrous or densely glandular-hairy;

bracts spatulate to linear-lanceolate, 3–22 mm.

1, terminal, 60–180 mm, 15–50(–120)-flowered, axis eglandular- and glandular-hairy;

proximal bracts similar to leaves, distal ones linear-lanceolate, 3–5 mm.

Pedicels

erect, 0.2–1(–2) mm, much shorter than subtending bract, glabrous or densely glandular-hairy.

erect, 2–4(–5) mm, shorter than subtending bract, length 1/2–1 times calyx, eglandular- and glandular-hairy.

Flowers

calyx lobes (2–)3–6 mm, 0.9–2 mm wide, apex obtuse to acute, glabrous or densely glandular-hairy;

corolla white or pale pink, 2–5 mm diam.;

stamens 1 mm;

style 0.1–0.5 mm.

calyx lobes 3.5–6 mm, apex acute, eglandular- and glandular-hairy;

corolla deep blue, 4–6 mm diam.;

stamens 0.8–1.5 mm;

style 0.8–1.5 mm, stigma violet.

Capsules

strongly compressed in cross section, obcordiform, 2.5–5 × 2.5–6 mm, apex ± emarginate, glabrous.

compressed in cross section, narrowly obcordiform, 3.5–4.5 × 4–6 mm, apex emarginate, angle of sinus ca. 90°, ciliate with glandular and eglandular hairs.

Seeds

12–140, yellow or pale brown, oblong, flat, 0.6–1.6 × 0.4–0.9 mm, 0.1–0.2 mm thick, smooth.

10–28, yellowish, ellipsoid, flat, 0.9–1.6 × 0.7–1.3 mm, 0.2–0.3 mm thick, smooth.

2n

= 52.

= 16 (Eurasia).

Veronica peregrina

Veronica dillenii

Phenology Flowering (Feb–)Mar–Jun(–Nov). Flowering (Mar–)Apr–Jul.
Habitat Moist waste lands, gardens, roadsides, stream banks, pond shorelines, vernal pools, other cultivated land. Open pine and oak forests, rocky, dry, sandy slopes.
Elevation 0–700(–3000) m. [0–2300(–9800) ft.] 500–2200 m. [1600–7200 ft.]
Distribution
from FNA
AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK; YT; Central America; South America; Mexico (Baja California, Baja California Sur, Chihuahua, México, Sonora); Eurasia; Australia
[WildflowerSearch map]
[BONAP county map]
from FNA
IL; IN; MI; NY; VA; WI; Eurasia [Introduced in North America]
[BONAP county map]
Discussion

Stem indument of Veronica peregrina has been used to distinguish var. xalapensis with a glandular-hairy stem (F. W. Pennell 1935), a variety that seems to be confined to drier places than the type variety. Variety laurentiana is also differentiated from var. peregrina in having a glandular-hairy stem, fleshier leaves, shorter stamens, smaller corollas, and slightly differently shaped capsules (Frère Marie-Victorin and J. Rousseau 1940).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Veronica dillenii is closely related to V. verna but with larger flowers; it may have been overlooked and may be distributed more widely. Most herbarium specimens of V. dillenii blacken when dry due to the presence of aucubin, which distinguishes them from V. verna.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 314. FNA vol. 17, p. 318.
Parent taxa Plantaginaceae > Veronica Plantaginaceae > Veronica
Sibling taxa
V. agrestis, V. alpina, V. americana, V. anagallis-aquatica, V. argute-serrata, V. arvensis, V. beccabunga, V. biloba, V. catenata, V. chamaedrys, V. copelandii, V. cusickii, V. cymbalaria, V. dillenii, V. filiformis, V. fruticans, V. grandiflora, V. hederifolia, V. longifolia, V. officinalis, V. persica, V. polita, V. scutellata, V. serpyllifolia, V. spicata, V. stelleri, V. sublobata, V. teucrium, V. triloba, V. triphyllos, V. undulata, V. verna, V. wormskjoldii
V. agrestis, V. alpina, V. americana, V. anagallis-aquatica, V. argute-serrata, V. arvensis, V. beccabunga, V. biloba, V. catenata, V. chamaedrys, V. copelandii, V. cusickii, V. cymbalaria, V. filiformis, V. fruticans, V. grandiflora, V. hederifolia, V. longifolia, V. officinalis, V. peregrina, V. persica, V. polita, V. scutellata, V. serpyllifolia, V. spicata, V. stelleri, V. sublobata, V. teucrium, V. triloba, V. triphyllos, V. undulata, V. verna, V. wormskjoldii
Synonyms V. peregrina var. laurentiana, V. peregrina subsp. xalapensis, V. peregrina var. xalapensis, V. sherwoodii, V. xalapensis
Name authority Linnaeus: Sp. Pl. 1: 14. (1753) Crantz: Stirp. Austr. Fasc. ed. 2, 2: 352. (1769)
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