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California amaranth

Habit Plants glabrous.
Stems

prostrate; much branched and mat-forming, 1–5 dm, often whitish.

Leaves

blades oblong, obovate, or oblanceolate, 3–20 mm, bases wedge-shaped;

margins entire; plane; flat to sometimes undulate;

midveins extending to a spine;

tips rounded to subacute;

petioles 2–6(8)mm; ? ½ as long as blade.

Inflorescences

axillary clusters of flowers, staminate and pistillate flowers intermixed;

bracts small and inconspicuous, 1–2 mm.

Staminate flowers

perianth segments (2)3; equal to subequal, 1–1.5 mm;

stamens 3.

Pistillate flowers

perianth segments 1–3, unequal, only 1 well developed, 1–1.2 mm;

styles 3; erect.

Fruits

subglobose, 1–1.2 mm; smooth, wrinkled near tips; dehiscence irregular to circumscissile.

Seeds

lenticular, obovate, 0.7–1 mm, dark red-brown; shiny.

Amaranthus muricatus

Amaranthus californicus

Distribution
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Mud flats, dry ponds, ditches, gravel bars, disturbed areas. Flowering Jun–Sep. 50–1500 m. BR, BW, Owy, Sisk. CA, ID, NV, WA; scattered in western North America. Native.

Source Flora of Oregon, volume 2, page 65
Bridget Chipman
Sibling taxa
A. albus, A. blitoides, A. californicus, A. deflexus, A. hybridus, A. hypochondriacus, A. powellii, A. retroflexus, A. viridus
A. albus, A. blitoides, A. deflexus, A. hybridus, A. hypochondriacus, A. powellii, A. retroflexus, A. viridus
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