Flora of North America species comparison

main stems persistent, terete, not winged, glabrous or scabridulous; ultimate branchlets deciduous, subterete, not winged, glabrous or scabridulous.

terete, not winged, glabrous.

on main stems spiral, scalelike;

stipules not auriculate, pale reddish brown.;

leaves on ultimate branchlets distichous, well developed;

stipules not auriculate, greenish white;

blade elliptic to oblong, 3–10 × 1–4 mm, base cuneate to subcordate, apex obtuse to emarginate, both surfaces glabrous or scabridulous.

distichous; all well developed;

stipules auriculate, pale brown;

blade ± orbiculate, 9–17 mm diam., base cordate, apex rounded to shallowly emarginate, both surfaces papillate.

cymules, proximal staminate with 2 flowers, distal bisexual with 1 pistillate flower and 1–3 staminate flowers.

cymules, bisexual, with 1–2 staminate and 1–2 pistillate flowers, or flowers solitary.

staminate 0.7–1.5 mm, pistillate spreading in fruit, (1–)1.5–3(–3.5) mm.

staminate 0.5–1 mm, pistillate spreading in fruit, 0.5–1 mm.

sepals 5–6 in basal cymules, 4 in distal cymules, pale yellowish green, sometimes suffused with red, flat, 0.5–1 mm;

nectary extrastaminal, 4(–6) glands;

stamens 2(–3 in basal cymules), filaments connate throughout.

sepals (5–)6, white or greenish white, flat, 1–1.4 mm;

nectary extrastaminal, (5–)6 glands;

stamens 3, filaments distinct.

sepals 5–6, green with nearly white margins, flat, (0.5–)0.7–1.1 mm, 1-veined;

nectary 3 glands (2-fid distally, thus resembling 6 glands).

sepals (5–)6, white or greenish white, flat, 0.8–1.2 mm, 1-veined;

nectary annular, unlobed to lobed.

2.3–2.7 mm diam., smooth.

2.5–3 mm diam., smooth.

uniformly brown, 1.1–1.5 mm, longitudinally ribbed.

uniformly brown, 1–1.4 mm, verrucose.