Atriplex argentea var. mohavensis

(M. E. Jones) S. L. Welsh
Common names: Mohave orach
Synonyms: Atriplex expansa var. trinervata (Jepson) J. F. Macbride Atriplex sordida Jepson Atriplex trinervata unknown
Basionyms: Atriplex expansa var. mohavensis M. E. Jones
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 lance-ovate, 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

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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.

References

None.

Lower Taxa

No lower taxa listed.