35.
Atriplex serenana
A. Nelson ex Abrams, Fl. Los Angeles. 128. 1904.
Stinking orach, bracteate orach
Herbs
, annual, erect or sprawling, usually branched often forming tangled mats to 10 × (3-)5-20 dm, ascending branches sparsely scurfy.
Leaves
many, subsessile or very short petiolate; blade subconcolorous, lanceolate to oblong, elliptic, or oval, (8-)10-30(-40) × 3-12(-15) mm, margin sharply dentate to entire.
Staminate flowers
in glomerules in terminal spikes or panicles 3-20 cm, or reduced to solitary, rounded, terminal glomerule.
Pistillate flower
in small clusters, axillary.
Fruiting bracteoles
sessile or subsessile (stipe to 1 mm), cuneate-orbicular to obovate, somewhat compressed, 2.1-3.5 × (1.7-)2-3.7 mm, united
1
/2 of length, margin sharply and often slenderly toothed beyond middle, faces often rather strongly veined, smooth or with 1 or more slender or flattened appendages.
Seeds
brown, 1-1.3(-1.5) mm.
2n
= 18.
Varieties 2 (2 in the flora): sw United States, nw Mexico.
