Kochia americana |
Kochia scoparia |
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red sage |
belvedere, burningbush, fireball, Mexican firebrush, Mexican fireweed, ragweed, summer-cypress |
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Habit | Plants whitish gray or grayish green, 5–35(–50) cm, tomentose-sericeous or almost glabrous. | |
Stems | erect or ascending, simple or branched only at base; branches ± erect. |
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Leaves | sessile, overlapping; blade linear, terete or semiterete, 4–25 × 0.5–2 mm, sericeous or almost glabrous. |
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Inflorescences | spicate; 1–4-flowered in axils of bracts. |
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Perianth | segments white-tomentose or sometimes glabrate. |
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Kochia americana |
Kochia scoparia |
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Phenology | Flowering late summer–fall. | |
Habitat | Alkaline soils, semideserts and deserts, dry lake margins, eroded mountain slopes, sometimes disturbed seminatural habitats | |
Elevation | 500-2100 m (1600-6900 ft) | |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; TX; UT; WY; n Mexico |
AL; AZ; CA; CO; CT; DE; IA; ID; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; MT; NC; ND; NE; NH; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WY; AB; BC; MB; NB; ON; QC; SK; Europe; Asia
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Discussion | Densely pubescent plants may be recognized as Kochia americana var. vestita S. Watson. Additional study variability and phylogenetic patterns of K. americana would be very desirable. Previously, this native North American species was erroneously referred to as Kochia prostrata auct. fl. Amer. Bor., non (Linnaeus) Schrader. Indeed, these species are habitually quite similar. Kochia prostrata (Linnaeus) Schrader, the Eurasian subshrub 15–100(–150) cm tall, with linear to filiform, flat or scarcely fleshy leaves 5–25 × 1–2 mm, is known in North American range management literature as “forage kochia” or “prostrate summer-cypress.” It is extremely variable morphologically and widely distributed in Eurasia, especially in steppe, semidesert, and desert zones. This species is being tested and already used locally as a potential forage plant for western United States ranges and has been an escaped or naturalized alien in Utah and adjacent states (W. A. Keller and A. T. Bleak 1974; S. L. Welsh 1984). It was reported as cultivated in Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, and Washington. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2–4 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 312. | FNA vol. 4, p. 311. |
Parent taxa | Chenopodiaceae > Kochia > sect. Neokochia | Chenopodiaceae > Kochia > sect. Semibassia |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Bassia americana, K. americana var. vestita, K. vestita | Chenopodium scoparium |
Name authority | S. Watson: Proc. Amer. Acad. Arts 9: 93. (1874) | (Linnaeus) Schrader: Neues J. Bot. 3: 85. (1809) |
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