Chenopodium atrovirens |
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dark lamb's-quarters, dark-green goosefoot, green goosefoot, pinyon goosefoot |
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Stems | erect to ascending, usually much-branched, 0.7–6.5 dm, moderately to densely farinose. |
Leaves | nonaromatic; petiole 0.5–1.5 cm, usually markedly upward curved; blade ovate, broadly oblong, oblong, oval, or occasionally triangular, prominently 3-veined, 1–3 × 0.4–2.2 cm, 1.5–3 times longer than wide, thick, base rounded to cuneate, margins entire or occasionally with basal lobe, apex obtuse or rounded, farinose abaxially. |
Inflorescences | glomerules in terminal and axillary paniculate spikes, 2–8 × 1–1.5 cm; glomerules maturing unevenly; bracts linear, 2 × 0.1 mm. |
Flowers | perianth segments 5, distinct nearly to base; lobes obovate, 0.8–0.9 × 0.6–0.8 mm, apex rounded or emarginate, carinate, farinose, not covering fruit at maturity; stamens 5; stigmas 2, 0.1 mm. |
Achenes | or Utricles ovoid; pericarp adherent or nonadherent, smooth. |
Seeds | 0.9–1.3 mm diam., margins acute; seed coat black, rugulate. |
2n | = 18. |
Chenopodium atrovirens |
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Phenology | Fruiting mid summer–fall. |
Habitat | Open dry sandy areas and other disturbed sites |
Elevation | 100-3400 m (300-11200 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WY; AB; BC; SK
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Discussion | Chenopodium atrovirens has been reported for Washington but we have seen no specimens. Reports of C. carnulosum Moquin-Tandon from Texas are, at least in part, this species. We have seen no reliable North American records of this southern South American species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4. |
Parent taxa | Chenopodiaceae > Chenopodium > subg. Chenopodium > sect. Chenopodium > subsect. Leptophylla |
Sibling taxa | |
Synonyms | C. fremontii var. atrovirens |
Name authority | Rydberg: Mem. New York Bot. Gard. 1: 131. (1900) |
Web links |
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