Flora of North America species comparison

simple from base, erect, unbranched or branched distally, (0.8–)1.2–5(–6.3) dm.

several from base, usually erect to ascending, rarely decumbent, branched, 0.4–1.5(–2) dm.

rosulate;

petiole (0.5–)1.5–6 cm;

blade oblanceolate or oblong, (1–)2–6(–8) cm × 5–15 mm, margins entire, lyrate, or pinnatifid.

(soon withered);

not rosulate;

petiole 0.5–1.5(–2) cm;

blade margins entire or pinnatifid (lobes 2–5 pairs, linear to filiform), 1.5–5 cm × 0.5–2 mm.

sessile; oblong, lanceolate, or narrowly deltate-lanceolate, (0.7–)1–4(–6.5) cm × (2–)5–10(–15) mm, base sagittate or auriculate, margins dentate or subentire.

petiolate;

blade linear, 0.1–0.3 cm × 0.5–2 mm, base attenuate, not auriculate, margins entire.

much-elongated in fruit;

rachis hirsute, trichomes spreading, straight.

considerably elongated, (lax) in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

sepals oblong, (1–)1.3–1.8 × 0.6–0.8 mm;

petals white, spatulate, (1.5–)1.8–2.5(–3) × (0.2–)0.5–0.7 mm, claw 0.6–1 mm;

stamens 6;

filaments (1.2–)1.5–1.8(–2) mm, (glabrous);

anthers 0.3–0.5 mm.

sepals oblong, 0.6–0.8 × 0.4–0.5 mm;

petals absent;

stamens 4, median;

filaments 0.6–0.7;

anthers ca. 0.1 mm.

horizontal, straight or slightly recurved, (terete), (3–)4–8(–10) × 0.3–0.4 mm, hirsute.

divaricate to horizontal or descending, usually recurved, rarely straight, (terete or slightly flattened), 2–4(–6) × 0.2–0.3 mm, glabrous or puberulent adaxially.

broadly oblong to ovate, (4–)5–6(–6.5) × (3–)4–5 mm, (curved adaxially), apically broadly winged, apical notch (0.2–)0.4–0.6 mm deep;

valves thin, papillate except for wing, not veined;

style 0.2–0.5(–0.7) mm, slightly exserted beyond, or included in, apical notch.

ovate, 2.4–3.6 × 1.8–2.5 mm, apically winged, apical notch (V-shaped), 0.3–0.8 mm deep;

valves thin, smooth, strongly reticulate-veined, glabrous;

style obsolete or to 0.1 mm, included in apical notch.

(dark brown), ovoid, 2–2.3(–2.8) × 1–1.4 mm.

oblong, 1.4–1.8 × 0.8–0.9 mm.

= 16.