Flora of North America species comparison

erect to trailing, gray-green, apex often flexuous.

erect, green, apex never flexuous.

petiole 4–20(–30) mm;

blade usually triangular to subhastate, sometimes ovate, 1–4.5 × 0.8–3 cm, base cordate, hastate, or truncate, margins crenate to serrate, apex acute to obtuse.

petiole 3–15 mm;

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

terminal or axillary, glands absent, staminate flowers 5–16 per raceme;

staminate bracts 0.9–2 mm.

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

staminate bracts 1–1.5 mm.

staminate 0.7–1.2 mm, persistent base 0.2–0.8 mm;

pistillate 1.5–4 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 3–4, green, 0.9–1.2 mm;

stamens 3–4, filaments 0.2–0.7 mm.

sepals 3, green, 1.2–2.1 mm;

stamens 3, filaments 0.3–0.8 mm.

sepals lanceolate, 1–2.5 mm;

styles connate to 1/3 length, short-exserted;

stigmas undulate to subpapillate.

sepals lanceolate-ovate, 1.3–2.3 mm;

styles connate 1/3 length;

stigmas papillate.

7–8 mm wide.

7–8 mm wide.

brown with tan mottling, 2.5–3.5 mm.

dark brown, 3–4 mm.

= 110.

= 44.