Atriplex serenana |
Atriplex gmelinii |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
bracteate orach, bractscale, saltscale, stinking orach |
Gmelin's orach, Gmelin's orache, Gmelin's saltbush |
|||||||||
Habit | Herbs, annual, erect or sprawling, usually branched often forming tangled mats to 10 × (3–)5–20 dm, ascending branches sparsely scurfy. | Herbs, monoecious, erect or ascending, branched from base or rarely simple, 0.5–8(–100) dm; proximal branches mostly elongated and often prostrate. | ||||||||
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, except the proximal-most; petiole 0.5–1.5(–2) cm; blade green on both sides, ovate to oblong or lanceolate to oblong, deltoid-oblong, or linear, 9–100 × 1–50 mm, base mostly rounded to tapering or more rarely broadly cuneate from a hastate base, margin entire or repand denticulate, apex acute or acuminate or more rarely obtuse, glabrous or nearly so. |
||||||||
Flowers | glomerate in rather loose, spiciform inflorescences, and in axillary clusters; staminate ones 4–5-merous. |
|||||||||
Staminate flowers | in glomerules in terminal spikes or panicles 3–20 cm, or reduced to solitary, rounded, terminal glomerule. |
|||||||||
Pistillate flower | in small clusters, axillary. |
|||||||||
Seeds | brown, 1–1.3(–1.5) mm. |
dimorphic: some small, black (lacking? in var. alaskensis), convex, 1.5–2 mm wide, lustrous, others pale brown, flat, 1.5–3.5 mm wide; radicle inferior or subascending. |
||||||||
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 darkening at maturity, sessile or stipitate, ovate or oblong to orbiculate, longest ones strap-shaped or ovate-lanceolate, mainly 4–10 mm, distinct nearly to base, margin entire or with (1 or) 2 or more teeth, apex acuminate to acute, often bulging on both sides of the impressed midnerve, at first mealy, finally glabrate. |
||||||||
2n | = 18. |
= 54. |
||||||||
Atriplex serenana |
Atriplex gmelinii |
|||||||||
Distribution |
CA; NV; nw Mexico
|
AK; CA; WA; BC; NT
|
||||||||
Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|
||||||||
Source | FNA vol. 4, p. 361. | FNA vol. 4, p. 333. | ||||||||
Parent taxa | Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Arenariae | Chenopodiaceae > Atriplex > subg. Atriplex > sect. Teutliopsis | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | A. Nelson ex Abrams: Fl. Los Angeles, 128. (1904) | C. A. Meyer ex Bongard: Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. 6, Sci. Math. 2: 160. (1838) | ||||||||
Web links |
|