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.

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
... 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 +
1mm;50mm +
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 +