Lepidium campestre

(Linnaeus) W. T. Aiton

in W. Aiton and W. T. Aiton, Hortus Kew. 4: 88. 1812.

WeedyIntroducedIllustrated
Basionym: Thlaspi campestre Linnaeus Sp. Pl. 2: 646. 1753
Synonyms: Neolepia campestris (Linnaeus) W. A. Weber
Treatment appears in FNA Volume 7. Treatment on page 577. Mentioned on page 571, 581.

Annuals; densely hirsute. Stems simple from base, erect, unbranched or branched distally, (0.8–)1.2–5(–6.3) dm. Basal leaves rosulate; petiole (0.5–)1.5–6 cm; blade oblanceolate or oblong, (1–)2–6(–8) cm × 5–15 mm, margins entire, lyrate, or pinnatifid. Cauline leaves sessile; oblong, lanceolate, or narrowly deltate-lanceolate, (0.7–)1–4(–6.5) cm × (2–)5–10(–15) mm, base sagittate or auriculate, margins dentate or subentire. Racemes much-elongated in fruit; rachis hirsute, trichomes spreading, straight. Fruiting pedicels horizontal, straight or slightly recurved, (terete), (3–)4–8(–10) × 0.3–0.4 mm, hirsute. Flowers: sepals oblong, (1–)1.3–1.8 × 0.6–0.8 mm; petals white, spatulate, (1.5–)1.8–2.5(–3) × (0.2–)0.5–0.7 mm, claw 0.6–1 mm; stamens 6; filaments (1.2–)1.5–1.8(–2) mm, (glabrous); anthers 0.3–0.5 mm. Fruits broadly oblong to ovate, (4–)5–6(–6.5) × (3–)4–5 mm, (curved adaxially), apically broadly winged, apical notch (0.2–)0.4–0.6 mm deep; valves thin, papillate except for wing, not veined; style 0.2–0.5(–0.7) mm, slightly exserted beyond, or included in, apical notch. Seeds (dark brown), ovoid, 2–2.3(–2.8) × 1–1.4 mm. 2n = 16.


Phenology: Flowering May–Jun.
Habitat: Roadside, pastures, gardens, open flats, pine woodlands, rocky slopes, forests, waste grounds, disturbed areas, meadows, fields
Elevation: 0-2600 m

Distribution

V7 928-distribution-map.gif

Introduced; B.C., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Ala., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., Ohio, Oreg., Pa., R.I., S.C., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Europe, Asia, introduced also in South America, South Africa.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Lepidium campestre"
Ihsan A. Al-Shehbaz +  and John F. Gaskin +
(Linnaeus) W. T. Aiton +
Thlaspi campestre +
B.C. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.C. +, Tenn. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Europe +, Asia +, introduced also in South America +  and South Africa. +
0-2600 m +
Roadside, pastures, gardens, open flats, pine woodlands, rocky slopes, forests, waste grounds, disturbed areas, meadows, fields +
Flowering May–Jun. +
in W. Aiton and W. T. Aiton, Hortus Kew. +
Weedy +, Introduced +  and Illustrated +
Neolepia campestris +
Lepidium campestre +
Lepidium +
species +