Difference between revisions of "Chenopodium incanum"
Pl. World 1: 23. 1897.
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Latest revision as of 17:01, 6 November 2020
Stems erect to spreading, branched from base or simple, 0.6–7.5 dm, farinose. Leaves nonaromatic; petiole 0.5–1 cm; blade broadly triangular to broadly ovate, distal leaves narrowly triangular to narrowly ovate, 1–1.5(–2.3) × 0.5–1.6 cm, thin or thick, base cuneate to subtruncate, margins usually with two basal teeth or lobes, teeth or lobes acute to acuminate, obtuse, or rounded, apex rounded, obtuse, or acute, farinose abaxially. Inflorescences glomerules in terminal and lateral panicles, 3.5–12 × 1–7 cm; glomerules maturing mixed; bracts absent. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, 0.8–1.1 × 0.7–1 mm, apex acute to obtuse, keeled or not, farinose, completely covering fruit at maturity; stamens 5; stigmas 2, 0.2 mm. Utricles ovoid; pericarp nonadherent, smooth. Seeds round, 0.9–1.25 mm diam., margins rounded with a narrow rim; seed coat dark black, wrinkled. 2n = 18.
Distribution
Alta., Sask., Ariz., Calif., Colo., Kans., N.Mex., Nebr., Nev., Okla., S.Dak., Tex., Utah, Wyo.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Plants densely branching from base, branches spreading to ascending, 0.6-1.5(-3) dm; leaf blade apices and basal teeth. | Chenopodium incanum var. incanum |
| 1 | Plants erect or spreading, unbranched or branching from base with erect ascending branches, 1-2.5 dm; leaf blade apices and basal teeth rounded, obtuse, or occasionally acute | > 2 |
| 2 | Plants erect or spreading, 1-3.5 dm | Chenopodium incanum var. occidentale |
| 2 | Plants erect, 2.5-7.5 dm | Chenopodium incanum var. elatum |