Flora of North America species comparison

ascending to erect, branching in distal 1/4–1/2, 8–27 cm, glabrous.

erect, branching in distal 1/10–1/4(–1/2), (1.8–)4–10 cm, glabrous.

usually opposite, sometimes alternate distally, membranous.

alternate, membranous or fleshy.

2–9;

petiole 0.2–10 mm, glabrous;

blade ovate to depressed-ovate or flabellate, 5–17(–20) × (3–)6–16 mm, base truncate to cuneate, margins 9–17(–21)-crenate or -crenate-dentate, glabrous, surfaces glabrous abaxially and adaxially.

absent or 1(–2);

petiole 1–13 mm, glabrous or villous, hairs purplish;

blade depressed-ovate to reniform or flabellate, 3–5 × 3.5–7 mm, base cordate to truncate, margins 3–5(–7)-crenate, glabrous, surfaces glabrous or villous, hairs scattered, purplish.

terminal or axillary solitary flowers or 3–20-flowered, open cymes;

bracts green, not purple-spotted, foliaceous, ovate to flabellate, 2–9 × 2–8 mm, margins 5–9-crenate.

terminal, 3–15-flowered, compact cymes;

bracts greenish yellow, sometimes purple-spotted, foliaceous, depressed-ovate to flabellate, 2–5 × 3–9 mm, margins subentire or 3–5-crenate.

absent or 0.1–1.8(–3) mm.

absent or 0.1–1 mm.

hypanthium green, not purple-spotted, turbinate, 0.8–1.8 × 1.5–3 mm, glabrous;

sepals spreading to erect, green, not purple-spotted, sometimes reddish brown-spotted distally, broadly ovate, 1–1.5 × 1.1–1.8 mm, apex obtuse to rounded;

nectary disc conspicuous, green or purple, 8-lobed;

stamens 8, 0.4–0.8 mm;

anthers yellow, 0.1–0.3 × 0.2–0.4 mm;

styles 0.3–0.4 mm.

hypanthium green or yellowish, usually purple-spotted, campanulate, 1.8–2.2 × 1.8–3 mm, glabrous;

sepals spreading, green or greenish yellow, usually purple-spotted distally, rarely not purple-spotted, broadly ovate to depressed-ovate, 1–1.6 × 1.4–2.2 mm, apex obtuse to rounded;

nectary disc apparently absent;

stamens 5–8, 0.5–0.8 mm;

anthers yellow, 0.2–0.4 × 0.2–0.4 mm;

styles 0.3–0.4(–0.5) mm.

10–20, dark brown, ovoid to ellipsoid, 0.7–1 mm, glabrous.

7–26, reddish brown, ovoid to ellipsoid, 0.8–1.1 mm, glabrous.

leaves: petiole 3–10 mm, glabrous;

blade ovate to depressed-ovate or flabellate, 5–17(–20) × (3–)6–16 mm, base truncate to cuneate, margins 9–17(–21)-crenate or -crenate-dentate, not purple-spotted, glabrous, surfaces glabrous abaxially and adaxially.

leaves: petiole 4–21 mm, sparsely villous or, rarely, glabrous, hairs white or reddish brown;

blade depressed-ovate, depressed-elliptic, or reniform, 4–8 × 4–10 mm, base cordate, margins 5–7-crenate, not purple-spotted, glabrous or sparsely ciliate, hairs white, surfaces sparsely villous, hairs white, sometimes purplish, especially near petiole.

= 18.

= 96.