Atriplex serenana |
Atriplex saccaria |
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bracteate orach, bractscale, saltscale, stinking orach |
sack saltbush, sack saltweed, stalk orach, stalk orache |
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Habit | Herbs, annual, erect or sprawling, usually branched often forming tangled mats to 10 × (3–)5–20 dm, ascending branches sparsely scurfy. | Herbs, erect, forming rounded clumps. | ||||||||||||
Stems | mainly 0.5–4(–5) dm; stems usually branched from base, terete, stout, angled; herbage scurfy. |
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Leaves | many, subsessile or very short petiolate; blade subconcolorous, lanceolate to oblong, elliptic, or oval, (8–)10–30(–40) × 3–12(–15) mm, margin sharply dentate to entire. |
alternate or proximalmost subopposite, short petiolate or distal ones sessile; petiole 2–5 mm; blade cordate-ovate or subreniform to ovate to deltoid-ovate or oval, mainly 6–40 × 4–30 mm, base truncate to subcordate or broadly cuneate, margin entire or in some subhastately lobed or sometimes undulate-dentate, apex acute to rounded. |
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Staminate flowers | in glomerules in terminal spikes or panicles 3–20 cm, or reduced to solitary, rounded, terminal glomerule. |
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Pistillate flower(s) | in small clusters, axillary. |
usually in fascicles of 1–3 in proximal axils. |
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Seeds | brown, 1–1.3(–1.5) mm. |
brownish to whitish, 1.5–2.3 mm. |
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Fruiting | bracteoles sessile or subsessile (stipe to 1 mm), cuneate-orbicular to obovate, somewhat compressed, 2.1–3.5 × (1.7–)2–3.7 mm, united 1/2 of length, margin sharply and often slenderly toothed beyond middle, faces often rather strongly veined, smooth or with 1 or more slender or flattened appendages. |
bracteoles monomorphic or dimorphic, larger ones on stipes (2–)4–8(–15) mm, others sessile, united at base, round-triangular or suborbicular, 4–6 mm, irregularly and coarsely dentate and with ± densely beset with flat, cristate, or hornlike appendages, smaller bracteoles (lacking or rare in var. asterocarpa) in same axils, oblong to cuneate, 3–4 mm, apex truncate, dentate only at summit, faces smooth. |
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Staminate | glomerules in distal axils or in short, naked, terminal (early deciduous) panicles; flowers with 5-parted calyx. |
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2n | = 18. |
= 18. |
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Atriplex serenana |
Atriplex saccaria |
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Distribution |
CA; NV; nw Mexico
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AZ; CO; NM; UT; WY
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (3 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. 361. | FNA vol. 4. | ||||||||||||
Parent taxa | Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Arenariae | Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Saccariae | ||||||||||||
Sibling taxa | ||||||||||||||
Subordinate taxa | ||||||||||||||
Synonyms | A. truncata var. saccaria, Obione saccaria | |||||||||||||
Name authority | A. Nelson ex Abrams: Fl. Los Angeles, 128. (1904) | S. Watson: Proc. Amer. Acad. Arts 9: 112. (1874) | ||||||||||||
Web links |