Flora of North America species comparison

to 2 m, wiry, branches numerous, finely ridged;

cladophylls solitary or in fascicles of 3 or more per node, linear, flattened, straight or curved, 8–22 × 2 mm, with single prominent vein.

annual, densely branched distally;

branches finely dissected, ascending to perpendicular, unarmed;

cladophylls in clusters of (2–)4–15(–25) per node, filiform, straight or curved, 1–3 cm.

membranous, 1–2 mm;

blade diamond-shaped, attached in middle, tapering to slender apex.

scalelike, 3–4 mm;

blade lanceolate, base hardened.

in axillary racemes, 5–9(–17)-flowered.

in axillary racemes, 1–3-flowered.

bisexual;

perianth rotate to campanulate;

tepals white to pale pink, 3–4 × 1.5–2 mm;

pedicel 5–8 mm, jointed 2–3 mm above base.

some unisexual;

perianth campanulate, yellow or yellowish green;

tepals connate 1–2 mm, greenish white, 3–8 × 1–2 mm;

pedicel 8–12 mm, jointed at or above middle.

red, 5–8 mm.

red, 6–10 mm.

1.

2–4.

= 40, 60.

= 20, 40.