Atriplex argentea var. mohavensis

(M. E. Jones) S. L. Welsh
Common names: Mohave orach
Basionym: Atriplex expansa var. mohavensis M. E. Jones Contr. W. Bot. 11: 20. 1903
Synonyms: Atriplex expansa var. trinervata (Jepson) J. F. Macbride Atriplex sordida Jepson Atriplex trinervata
Treatment appears in FNA Volume 4. Treatment on page 351. Mentioned on page 350.

Stems erect or decumbent, much branched, 3–12 (–20) dm, forming clumps 3–10 (–30) dm broad; branches obtusely to sharply angled, finely scurfy, white scurfy to glabrate. Leaves: petiole 2–21 mm on proximal leaves, distal ones sessile; blade 3-veined at base, ovate to lanceovate, or deltoid-ovate, (10–) 25–75 mm and often as broad, margin irregularly dentate or entire. Flowers of sexes intermixed in glomerules or staminate ones in distinct glomerules. Staminate flowers 5-merous. Pistillate flowers in axillary fascicles. Fruiting bracteoles sessile to subsessile, orbicular or cuneate-orbicular, mostly 3-veined, (3–) 4–7 × 2–4 mm, united to middle, margin sharply dentate, faces with a few irregular, green projections or crests, or unappendaged.


Phenology: Flowering summer–fall.
Habitat: Dry or saline substrates
Elevation: above 1000 m

Distribution

V4 673-distribution-map.gif

Ariz., Calif., N.Mex., Nev., Okla., Tex., Mexico

Discussion

Atriplex argentea var. mohavensis is a tall, bushy plant with tumbleweed proportions. Its morphologic differences, slight though they may be, are geographically based.

Selected References

None.

Lower Taxa

None.

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

54 +, 36 +  and 18 +
Stanley L. Welsh +
(M. E. Jones) S. L. Welsh +
slippery +
aromatic +
obtuse +  and acute +
Atriplex expansa var. mohavensis +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
ovate +  and lanceovate or deltoid-ovate +
2.5 cm25 mm <br />0.025 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
4mm;50mm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 +  and 1/2 +
cuneate +  and ovate or obovate +
scurfy +  and glabrate +
4-5-parted +
Mohave orach +
Ariz. +, Calif. +, N.Mex. +, Nev. +, Okla. +, Tex. +  and Mexico +
above 1000 m +
unappendaged +
tuberculate +
crested +
pistillate +, 5-merous +  and staminate +
rarely +  and lacking +
unisexual +  and bisexual +
not +  and connate +
enlarged +
Dry or saline substrates +
bladderlike +
terminal +  and axillary +
deciduous +  and persistent +
dentate +  and entire +
dentate +  and laciniate +
stipitate +, sessile +  and monomorphic +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
0.2 cm2 mm <br />0.002 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
Flowering summer–fall. +
sessile +  and petiolate +
Gen. N. Amer. Pl. +
lateral +  and superior +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
flattened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
cylindric +
3 (?) +  and 5 (?) +
opposite +  and alternate +
decumbent +  and erect +
succulent +
3dm;10dm +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Atriplex expansa var. trinervata +, Atriplex sordida +  and Atriplex trinervata +
Atriplex argentea var. mohavensis +
Atriplex argentea +
variety +
dicotyledonous +
3-veined +, sessile +  and subsessile +
cuneate-orbicular;orbicular +
branched +  and simple +