Flora of North America species comparison

erect to trailing, dark green to light green, apex rarely flexuous.

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

petiole 2–20 mm;

blade linear-lanceolate to narrowly ovate, 1–4 × 0.5–2 cm, base truncate to weakly cordate, margins serrate, apex acute.

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.

terminal (often appearing leaf opposed), glands few, sessile, staminate flowers 2–20 per raceme; staminate bracts 1.5–2 mm.

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

staminate 0.7–2 mm, persistent base 0.4–1.5 mm; pistillate 2–2.5 mm in fruit.

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

sepals 3–4, green, 1–2.2 mm;

stamens 3–6(–10), filaments 0.3–1 mm.

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

stamens 3(–4), filaments 0.4–1 mm.

sepals lanceolate, 0.8–2.5 mm;

styles connate 1/3–1/2 length, long-exserted;

stigmas smooth to undulate.

sepals lanceolate, 1.8–5 mm;

styles connate 1/3 length;

stigmas papillate.

6–8 mm wide.

7–9 mm wide.

dark brown, 2.5–3.5 mm.

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

= 44.