Flora of North America species comparison

erect to trailing, green to whitish green, apex never flexuous.

erect, brownish red to maroon-green, apex never flexuous.

petiole 10–40 mm;

blade triangular-lanceolate to triangular-ovate, 1.5–6 × 1–3.5 cm, base cordate to truncate, margins serrate, apex acute.

petiole 0.5–2 mm;

blade acicular to narrowly oblong, 1–6 × 0.2–0.6 cm, base acute to subcuneate, margins usually entire, sometimes serrulate, apex acute to obtuse.

terminal (often appearing leaf-opposed), glands absent, staminate flowers 15–80 per raceme, distally clustered; staminate bracts 1–2 mm.

terminal (appearing leaf opposed) or axillary, glands absent, staminate flowers 2–3(–5) per raceme; staminate bracts 2–2.5 mm.

staminate 0.7–1 mm, persistent base 0.3–0.6 mm, shorter than subtending bract; pistillate 3–4 mm in fruit.

staminate 1–2 mm, persistent base 0.5–0.8 mm, pistillate 2–3 mm in fruit.

sepals 3–4, green, sometimes red-tinged, 1.2–2.3 mm;

stamens 3(–4), filaments 0.4–1 mm.

sepals 3–4(–5), green, 1–2.5 mm;

stamens 3–4, filaments 1.2–1.4 mm, connate basally.

sepals lanceolate, 1.8–5 mm;

styles connate 1/3 length;

stigmas papillate.

sepals lanceolate, 1.5–2 mm;

styles connate 1/5 length;

stigmas undulate to slightly papillate.

7–9 mm wide.

4–5 mm wide.

dark brown with light brown streaks, 3–4 mm.

mottled dark olive brown, 2.5–3 mm.