Difference between revisions of "Chenopodium berlandieri"
Chenop. Monogr. Enum. , 23. 1840.
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Latest revision as of 18:03, 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](/w/images/4/4b/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.
Lower Taxa
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 |