Flora of North America species comparison

absent.

absent.

erect, (angled, sometimes flexuous), unbranched basally, usually branched distally, (1.2–)2–6.5(–9) dm.

(simple or few from base), erect to ascending, (not flexuous), unbranched or branched distally, (0.5–)0.8–3.2(–4.1) dm, usually pubescent throughout or proximally, rarely glabrous.

(often withered by flowering), rosulate, similar to cauline, with fewer distal leaflets.

(persistent to anthesis), rosulate, pinnately compound, 5–9(–13)-foliolate, 2–8.5(–11) cm, leaflets petiolulate or subsessile;

petiole 1–6 cm;

lateral leaflets petiolulate or subsessile, blade obovate to oblanceolate, smaller than terminal, margins entire or crenate;

terminal leaflet (petiolule 0.1–0.7 cm), blade usually orbicular to ovate, rarely oblong, 0.4–1.5(–2.3) cm × 3–10(–13) mm, base cordate to rounded, margins entire, or crenate-dentate to obscurely 3 or 5-lobed, (surfaces often hirsute, sometimes glabrous).

9–24, (9–)13–25-foliolate, petiolate, leaflets petiolulate;

petiole 2–6 cm, base auriculate (auricles to 10 × 2.2 mm);

lateral leaflets similar to terminal, blade often smaller;

terminal leaflet (petiolule to 0.5 cm), blade orbicular, obovate, ovate, or lanceolate, 1–4(–5) cm × 5–17 mm, margins entire or 3–5(–9)-toothed or -lobed.

3–8, pinnately compound, similar to basal, smaller and fewer distally, petiolate, leaflets petiolulate or subsessile;

petiole 0.5–2 cm, base not auriculate.

ebracteate.

ebracteate.

sepals oblong, 1.2–2(–2.5) × 0.7–1(–1.2) mm, lateral pair not saccate basally;

petals (rarely absent), white, oblanceolate, 1.5–4(–5) × 0.6–1.2 mm;

filaments 2–3(–4) mm;

anthers ovate, 0.3–0.5 mm.

sepals oblong, 1.3–1.8(–2) × 0.5–1 mm, lateral pair not saccate basally;

petals white, narrowly spatulate to oblanceolate, 2.5–3.5 × 0.9–1.5 mm (not clawed);

filaments: median pairs 1.7–2.5 mm, lateral pair 1.2–2 mm;

anthers ovate, 0.3–0.5 mm.

divaricate or ascending, 3.5–12(–15) mm.

divaricate-ascending, (2–)3–9(–12) mm.

linear, (torulose), (1–)1.6–3(–3.5) cm × 0.9–1.5 mm; (valves glabrous or, rarely, pilose);

ovules 10–30 per ovary;

style 0.6–1.6(–2) mm.

linear, (torulose), (1.3–)1.6–2.8 cm × 1–1.7 mm; (valves glabrous or sparsely pubescent);

ovules 16–36(–42) per ovary;

style 0.4–1(–1.5) mm.

brown, oblong, 1.1–1.5 × 0.8–1 mm, (compressed, sometimes narrowly winged apically).

brown, oblong, 1–1.6 × 0.8–1.2 mm.

= 16.

= 16.