Flora of North America species comparison

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

erect, branching in distal 1/6–1/3(–1/2), (1.2–)3–21 cm, glabrous or sparsely villous, especially proximally, hairs white or reddish brown.

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.

1–3(–4);

petiole (2–)4–20(–31) mm, glabrous or sparsely villous proximally, hairs white or reddish brown, sometimes purplish;

blade depressed-ovate, flabellate, or reniform, 3–9 × 4–13 mm, base truncate to cuneate or cordate, margins 3–7-crenate, glabrous, surfaces glabrous.

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, (2–)3–15-flowered, compact cymes;

bracts green, usually purple-spotted, foliaceous, ovate to depressed-ovate or flabellate, 2–9 × 3–12 mm, margins subentire or 3–5-crenate.

absent or 0.1–1.8(–3) mm.

absent or 0.1–1.5 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 greenish yellow, usually not purple-spotted, rarely purple-spotted distally, turbinate to campanulate, 1–2.2 × 1.2–2.1 mm, glabrous;

sepals usually erect, sometimes spreading, usually green, rarely yellow, usually purple-spotted throughout or distally, rarely not purple-spotted, ovate to broadly ovate or depressed-ovate, 0.8–1.5 × 0.8–1.7 mm, apex obtuse to rounded;

nectary disc apparently absent;

stamens (3–)4, 0.3–0.4 mm;

anthers yellow, 0.1–0.3 × 0.1–0.3 mm;

styles 0.2–0.3 mm.

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

(6–)15–40, reddish brown, ovoid to ellipsoid, 0.5–0.8 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 12–55 mm, usually sparsely villous, sometimes glabrous, hairs white or reddish brown;

blade usually depressed-ovate to reniform, sometimes nearly round, 3–14 × 5–18 mm, base cordate, margins 5–7-crenate, not purple-spotted, glabrous or sparsely ciliate, hairs white, surfaces glabrous or sparsely villous adaxially, hairs usually white, rarely purple.

= 18.

= 24.