Atriplex gmelinii

C. A. Meyer ex Bongard

Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. 6, Sci. Math. 2: 160. 1838.

Common names: Gmelin’s orach
IllustratedEndemic
Treatment appears in FNA Volume 4. Treatment on page 333. Mentioned on page 324, 334.
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Herbs, monoecious, erect or ascending, branched from base or rarely simple, 0.5–8 (–100) dm; proximal branches mostly elongated and often prostrate. Leaves alternate, except the proximalmost; 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. Fruiting bracteoles darkening at maturity, sessile or stipitate, ovate or oblong to orbiculate, longest ones strap-shaped or ovatelanceolate, 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. Seeds 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. 2n = 54.

Distribution

V4 632-distribution-map.gif

B.C., N.W.T., Alaska, Calif., Wash.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Brown seeds 1.7-3 mm wide; fruiting bracteoles mostly less than 10 mm; leaf blades mainly oblong to lance-oblong or linear, less commonly hastate-lanceolate Atriplex gmelinii var. gmelinii
1 Brown seeds 2.8-3.5 mm wide; fruiting bracteoles often more than 10 mm; leaf blades oblong to lanceolate or hastate-lanceolate or -ovate Atriplex gmelinii var. alaskensis

"dm" is not declared as a valid unit of measurement for this property.

... more about "Atriplex gmelinii"
glabrate +, nearly +  and glabrous +
acuminate +  and acute +
Stanley L. Welsh +
C. A. Meyer ex Bongard +
slippery +
aromatic +
hastate +, cuneate +, mostly rounded +  and tapering +
0.9 cm9 mm <br />0.009 m <br /> (10 cm100 mm <br />0.1 m <br />) +
ovate +  and oblong or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (5 cm50 mm <br />0.05 m <br />) +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
linear +  and deltoid +
3-5-parted +
Gmelin’s orach +
B.C. +, N.W.T. +, Alaska +, Calif. +  and Wash. +
tuberculate +  and smooth +
4-5-merous +, staminate +  and glomerate +
unisexual +  and bisexual +
not +  and connate +
enlarged +
bladderlike +
terminal +  and axillary +
deciduous +  and persistent +
stipitate +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not winged +  and winged +
with 2 or moreteeth +  and entire +
denticulate +, repand +  and entire +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Illustrated +  and Endemic +
cylindric +
3 +  and 5 +
opposite +  and alternate +
succulent +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Hastatae +
Atriplex gmelinii +
Atriplex sect. Teutliopsis +
species +
dicotyledonous +
simple +  and branched +