Atriplex powellii |
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Powell's orach, Powell's orache, Powell's saltbush, Powell's saltweed |
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Habit | Herbs, dioecious or sometimes sparingly monoecious. | ||||
Stems | slender to stout, mainly 1–5(–7) dm, branching almost throughout; herbage pubescent with scurfy and arachnoid hairs. |
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Leaves | alternate, proximalmost on petioles (3–)5–30 mm, becoming subsessile or short petiolate distally; blade 3-veined, ovate to rhombic or orbiculate to elliptic, 0.4–5 × 0.2–3 cm, base rounded to cuneate, margin entire, apex acute to obtuse. |
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Staminate flowers | with calyx 4–5-lobed. |
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Seeds | greenish, yellowish, or brown, 0.9–2 mm; radicle superior. |
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Fruiting | bracteoles sessile, ovate to oblong or broadly cuneate or pan-duriform, 1.5–5.5 × 1.5–5 mm, thick, united to apex, apex truncate to cuspidate or tridentate, surfaces with thickened processes or rarely smooth. |
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2n | = 18. |
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Atriplex powellii |
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Distribution |
AZ; CO; ID; MT; NE; NM; OR; SD; UT; WY; AB; SK
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 4, p. 352. | ||||
Parent taxa | Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Argenteae | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Synonyms | Obione powellii | ||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 9: 114. (1874) | ||||
Web links |