Flora of North America species comparison

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Atriplex parishii var. depressa
Photo is of parent taxon

depressed orach
Stems

prostrate to decumbent, white, to 2 dm, usually brittle, glabrous to scaly, grayish scurfy;

branches terete.
Leaves

sometimes opposite, proximalmost usually sessile;

blade ovate to cordate, 3–7 mm, margin entire, apex acute, usually densely white scaly.
Flowers

in axils of opposite, bracteate leaves, pistillate in clusters of 4, these and subtending leaves crowded on branchlets, internodes at anthesis 2 mm.
Staminate flowers

in small, yellow, axillary glomerules, calyx 4-lobed.
Seeds

reddish brown, 1–1.5 mm.
Fruiting

bracteoles deciduous, ovate (ovate-hastate) or rhombic, 2–3.5 mm, united to near summit, entire or obscurely denticulate, faces tuberculate, mostly white scurfy.

Atriplex parishii var. depressa
Phenology Flowering late summer–fall.
Habitat Alkaline grasslands, often on clay soils
Elevation 0-200(-300) m (0-700(-1000) ft)
Distribution
from FNA
CA
Discussion

Of conservation concern.

Atriplex parishii var. depressa occurs with Distichlis spicata, Frankenia salina, Centromadia pungens, Spergularia macrotheca, and Astragalus tener. This variety was cited in W. L. Jepson (1909–1943, vol. 1) and in L. Abrams and R. S. Ferris (1923–1960, vol. 2) as a synonym of Atriplex parishii but treated in the modern Jepson Manual as a distinct species, where it was separated in the key from A. parishii by having stems merely glabrous to densely scaly near the tips, versus woolly near the tips in A. parishii. The vestiture appears felty, with individual trichomes not usually evident.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 4, p. 357.
Parent taxa Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Pusillae > Atriplex parishii
Sibling taxa
A. parishii var. minuscula, A. parishii var. parishii, A. parishii var. persistens, A. parishii var. subtilis
Synonyms A. depressa
Name authority (Jepson) S. L. Welsh: Rhodora 102: 423. (2001)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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