Difference between revisions of "Chenopodium berlandieri"

Moquin-Tandon

Chenop. Monogr. Enum. , 23. 1840.

Common names: Pigweed
WeedyIllustrated
Treatment appears in FNA Volume 4. Treatment on page 294. Mentioned on page 275, 277, 291, 297.
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Latest revision as of 17:03, 6 November 2020

Stems erect to ascending, much-branched to simple, 1–10.5 dm, farinose. Leaves nonaromatic; petiole 0.2–9 cm; blade narrowly to broadly lanceolate, rhombic, ovate, or triangular, 1.2–12(–15) × 0.5–7.5(–9) cm, base cuneate to truncate, margins serrate, irregularly dentate, or entire, often with 2 basal lobes, apex acute to acuminate, farinose. Inflorescences glomerules in compound spikes, 5–17 cm; glomerules irregularly rounded, 4–7 mm diam.; bracts absent. Flowers: perianth segments 5, distinct nearly to base; lobes ovate to deltate, 0.7–1.5 × 0.7–1.3 mm, apex obtuse, farinose, often prominently keeled, covering fruit at maturity or not; stamens 5; stigmas 2, 0.3–0.5 mm. Achenes or utricles depressed-ovoid; pericarp adherent or nonadherent near stylar base, alveolate-rugose. Seeds round, 1–2 mm diam., margins rounded; seed coat brown to black, honeycomb pitted. 2n = 36.

Distribution

V4 560-distribution-map.gif

Alta., B.C., Man., N.S., N.W.T., Ont., P.E.I., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., D.C., Del., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Md., Mich., Minn., Miss., Mo., N.C., N.Dak., N.H., N.J., N.Mex., N.Y., Nebr., Nev., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Va., Vt., W.Va., Wash., Wis., Wyo., introduced widely.

Discussion

Varieties 6 (6 in the flora).

Selected References

None.

Key

1 Seeds 1.2-2 mm diam > 2
1 Seeds 1-1.3 mm diam > 4
2 Style bases with yellow area; seeds 1.2-1.5 mm diam Chenopodium berlandieri var. zschackei
2 Style bases without yellow area; seeds 1.3-2 mm diam > 3
3 Inflorescences large and drooping; seeds 1.7-2 mm diam Chenopodium berlandieri var. bushianum
3 Inflorescences small and erect; seeds 1.3- 1.9 mm diam Chenopodium berlandieri var. macrocalyci
4 Leaves not 3-lobed; inflorescences becoming bractless Chenopodium berlandieri var. boscianum
4 Leaves 3-lobed; inflorescences with or without bracts > 5
5 Inflorescences bractless Chenopodium berlandieri var. berl
5 Inflorescences with leafy bracts > 6
6 Style bases without yellow area Chenopodium berlandieri var. sinuatum
6 Style bases with yellow area Chenopodium berlandieri var. zschackei
... more about "Chenopodium berlandieri"
Steven E. Clemants +  and Sergei L. Mosyakin +
Moquin-Tandon +
Chenopodium (sect. Undefined) ser. Favosa +
Pigweed +
Alta. +, B.C. +, Man. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, D.C. +, Del. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Miss. +, Mo. +, N.C. +, N.Dak. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, Nebr. +, Nev. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Va. +, Vt. +, W.Va. +, Wash. +, Wis. +, Wyo. +  and introduced widely. +
Chenop. Monogr. Enum. , +
Weedy +  and Illustrated +
Chenopodium berlandieri +
Chenopodium subsect. Favosa +
species +