Flora of North America species comparison

erect, purple-green, apex never flexuous.

erect, green, apex never flexuous.

petiole 1–4 mm;

blade orbiculate to elliptic, 2–5 × 0.8–3 cm, base acute, margins serrate to crenate, apex acute to blunt.

petiole 3–15 mm;

blade triangular-lanceolate, 2.7–6.7 × 1–3 cm, base truncate to cordate, margins serrate, apex acute.

terminal (often appearing leaf opposed), glands absent, staminate flowers 4–11 per raceme;

staminate bracts 0.8–1.2 mm.

terminal (appearing leaf opposed), glands absent, staminate flowers 11–40 per raceme, evenly distributed;

staminate bracts 1–1.5 mm.

staminate 1.5–1.9 mm, persistent base 0.4–0.6 mm;

pistillate 2.8–3.4 mm in fruit.

staminate 1.5–2 mm, persistent base 1–1.8 mm, longer than subtending bract;

pistillate 3–4 mm in fruit.

sepals 4–5, green, 0.9–1.5 mm;

stamens 2, filaments 0.2–0.5 mm.

sepals 3, green, 1.2–2.1 mm;

stamens 3, filaments 0.3–0.8 mm.

sepals lanceolate, 1.3–2.3 mm;

styles connate 1/4 length;

stigmas undulate.

sepals lanceolate-ovate, 1.3–2.3 mm;

styles connate 1/3 length;

stigmas papillate.

9–13 mm wide.

7–8 mm wide.

dark brown with light brown streaks, 4–4.5 mm.

dark brown, 3–4 mm.

= 44.

= 44.