Capsella bursa-pastoris

(Linnaeus) Medikus
Pfl.-Gatt., 85. 1792.
WeedyIntroducedIllustrated
Basionyms: Thlaspi bursa-pastoris Linnaeus Sp. Pl. 2: 647. 1753
Treatment appears in FNA Volume 7. Treatment on page 454.

Plants mostly sparsely to densely pubescent, trichomes sessile, 3–5-rayed, stellate (base of plant often mixed with much longer, simple ones). Stems (0.2–)1–5(–7) dm. Basal leaves: petiole 0.5–4(–6) cm; blade oblong or oblanceolate, (0.5–)1.5–10(–15) cm × 2–25(–50) mm, base cuneate or attenuate, apex acute or acuminate. Cauline leaves: blade narrowly oblong, lanceolate, or linear, 1–5.5(–8) cm × 1–15(–20) mm, base sagittate, amplexicaul, or, rarely, auriculate. Fruiting pedicels usually straight, (0.3–)0.5–1.5(–2) cm, glabrous. Flowers: sepals green or reddish, 1.5–2 × 0.7–1 mm (margins membranous); petals (1.5–)2–4(–5) × 1–1.5 mm; filaments 1–2 mm; anthers to 0.5 mm. Fruits (0.3–)0.4–0.9(–1) cm × (2–)3–7(–9) mm, base cuneate, apex emarginate or truncate; valves each with subparallel lateral veins; style 0.2–0.7 mm. Seeds brown, 0.9–1.1 × 0.4–0.6 mm. 2n = 32.


Phenology: Flowering and fruiting Jan–Oct.
Habitat: Roadsides, gardens, fields, barren gravel, pastures, plantations, lawns, orchards, cultivated ground, waste areas, vineyards, mountain slopes
Elevation: 0-2800 m

Distribution

V7 692-distribution-map.gif

Introduced; Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., 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., Europe, Asia, n Africa, introduced also in Mexico, West Indies, Central America, South America, Atlantic Islands, Pacific Islands, Australia.

Discussion

According to M. Coquillat (1951), Capsella bursa-pastoris is the second most common weed on earth, after Polygonum aviculare.

Selected References

None.

Lower Taxa

None.

... more about "Capsella bursa-pastoris"
Ihsan A. Al-Shehbaz +
(Linnaeus) Medikus +
Thlaspi bursa-pastoris +
Greenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, 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. +, Europe +, Asia +, n Africa +, introduced also in Mexico +, West Indies +, Central America +, South America +, Atlantic Islands +, Pacific Islands +  and Australia. +
0-2800 m +
Roadsides, gardens, fields, barren gravel, pastures, plantations, lawns, orchards, cultivated ground, waste areas, vineyards, mountain slopes +
Flowering and fruiting Jan–Oct. +
Pfl.-Gatt., +
Weedy +, Introduced +  and Illustrated +
Bursa +  and Solmsiella +
Capsella bursa-pastoris +
Capsella +
species +