Atriplex wrightii

S. Watson

Proc. Amer. Acad. Arts 9: 113. 1874.

Common names: Wright’s orach
Treatment appears in FNA Volume 4. Treatment on page 361. Mentioned on page 329, 362.

Herbs, annual. Stems erect and ascending, sparsely branched or simple, obtusely angled, 1.5–10 (–15) dm, stout, scurfy when young. Leaves sessile or short petiolate; blade white abaxially, green adaxially, linear to lanceolate, elliptic, or oblong, 15–75 × (1–) 3–25 mm, thin, base cuneate to long attenuate, margin coarsely sinuate-dentate or entire, apex rounded to acute, mucronate, densely scurfy and pale abaxially, green and glabrous adaxially. Staminate flowers in glomerules, forming slender, usually dense, naked terminal narrowly paniculate spikes, panicles 6–30 cm; glomerules beadlike, small, 2–3 mm thick; calyx 5-cleft. Pistillate flowers in few-flowered axillary clusters. Fruiting bracteoles short stipitate, cuneate-orbiculate or broadly cuneate, compressed, 2–2.5 mm, united basally, apex rounded, acutely 5-dentate, faces 3-veined, usually unappendaged, rarely obscurely tuberculate. Seeds pale-brown, 1 mm.


Phenology: Flowering summer–fall.
Habitat: In alkaline or saline substrates, often along roadsides, in old fields and vacant lots
Elevation: 400-1200 m

Distribution

V4 707-distribution-map.gif

Ariz., N.Mex., Tex., Mexico

Discussion

The name Obione elegans var. radiata was discussed by H. M. Hall and F. E. Clements (1923), who did not see the Thurber type material, but did see another cited specimen, Wright 571, from west Texas, which is referable to Atriplex elegans. The concept of A. radiata, according to Coulter, includes A. wrightii as a synonym; the description supplied by him is of that entity.

Selected References

None.

Lower Taxa

None.

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

... more about "Atriplex wrightii"
green +  and pale +
glabrous +  and scurfy +
Rounded (?) +, Mucronate (?) +  and Acute (?) +
Stanley L. Welsh +
S. Watson +
slippery +
aromatic +
subsessile +, sessile +  and monomorphic +
cuneate +  and long attenuate +
broadest +
Arenariae +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
green;white +
1.5 cm15 mm <br />0.015 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
linear +  and lanceolate elliptic or oblong +
thin;3mm;25mm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 +  and 1/2 +
cuneate +  and ovate or obovate +
3-5-parted +
Wright’s orach +
Ariz. +, N.Mex. +, Tex. +  and Mexico +
400-1200 m +
unappendaged +  and 3-veined +
tuberculate +
pistillate +  and staminate +
rarely +  and lacking +
unisexual +  and bisexual +
not +  and connate +
enlarged +
2mm +  and 3mm +
In alkaline or saline substrates, often along roadsides, in old fields and vacant lots +
bladderlike +
terminal +  and axillary +
petiolate +, short +  and sessile +
deciduous +  and persistent +
not winged +  and winged +
entire +  and sinuate-dentate +
lobed +  and serrate-dentate +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
6 cm60 mm <br />0.06 m <br /> (30 cm300 mm <br />0.3 m <br />) +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
Flowering summer–fall. +
Proc. Amer. Acad. Arts +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
flattened +
cylindric +
3 (?) +  and 5 (?) +
simple +  and branched +
opposite +  and alternate +
ascending +  and erect +
succulent +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Atriplex sect. Obione +
Atriplex wrightii +
Atriplex subsect. Arenariae +
species +
dicotyledonous +
compressed;cuneate;cuneate-orbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
decumbent-ascending;erect +