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.

spiral, all well developed;

stipules auriculate, pink or red to medium brown, with hyaline margins;

blade narrowly oblong to obovate, 5–10 × 1.5–5 mm, base obtuse, apex acute to mucronulate, both surfaces glabrous or scabridulous.

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

cymules or flowers solitary, unisexual or bisexual, with 1(–2) pistillate flowers and/or 1–3 staminate flowers.

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

staminate 1.5–3.5 mm, pistillate spreading in fruit, 2.5–7 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, greenish yellow, sometimes suffused with red, with white margins, flat, 0.7–1.3 mm;

nectary extrastaminal, 6 glands;

stamens 3, filaments connate 2/3 length.

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, green with white margins, flat, 1.5–2.5 mm, pinnately veined;

nectary annular, 6-lobed.

2.3–2.7 mm diam., smooth.

2.7–3.2 mm diam., smooth.

uniformly brown, 1.1–1.5 mm, longitudinally ribbed.

uniformly brown, (1.1–)1.2–1.4(–1.5) mm, irregularly verrucose.

= 16.