Flora of North America species comparison

unbranched or branched distally, (0.8–)2–8(–10) dm.

unbranched or branched proximally, (0.5–)1–2(–3.5) dm.

(soon withered); rosulate; petiolate;

blade 1- or 2-pinnatifid (with broadly linear to filiform lobes), 2–20 cm, margins sinuate-dentate.

rosulate; petiolate (petioles slender);

blade 1- or 2-pinnatisect, 1.5–6 cm.

blade linear, 1–10 cm × 1–3 mm, (smaller distally), base auriculate, margins entire.

blade ovate to lanceolate, similar to basal, base auriculate proximally, amplexicaul distally, margins usually coarsely dentate or entire, rarely pinnatifid (not divided into filiform segments, entire distally).

ebracteate, (lax).

bracteate below or between proximalmost 1 or 2 flowers.

(markedly zygomorphic);

calyx urceolate;

sepals greenish yellow or purplish, (abaxial broadly ovate, not keeled, 4–6 × 3–4 mm, lateral ovate-lanceolate, keeled, 4–6 × 1.5–2 mm, adaxial suborbicular to broadly ovate-cordate, forming a bannerlike hood, keeled, 4–6 × 6–8 mm);

petals white (with brownish veins), 5–8 mm, blade 1–3 × 0.7–1.2 mm, margins crisped (channeled), claw 4–5 mm, wider than blade;

stamens in 3 unequal pairs;

filaments: abaxial pair (distinct), 4–5 mm, lateral pair 3–4 mm, adaxial pair (connate), 5–6 mm;

anthers: abaxial and lateral pairs fertile, 1.5–2 mm, adaxial pairs sterile, 0.3–0.7 mm;

gynophore 0.1–0.4 mm.

calyx tubular-urceolate;

sepals purple, 5–7 mm, slightly keeled or not, (apex recurved);

petals rose-purple, 9–15 mm, blade 3–6 × 2.5–3.5 mm, margins not crisped, claw 6–9 mm, narrower than blade;

stamens in 3 unequal pairs;

filaments (distinct): abaxial pair 3–4 mm, lateral pair 1.5–2.5 mm, adaxial pair 5–7 mm, (recurved);

anthers (all) fertile, 2–2.5 mm;

gynophore 0.2–2.5 mm.

strongly recurved, 2–5 mm.

divaricate-ascending, (straight), 2–7 mm.

pendent, smooth, straight, flattened, 2.4–5.6 cm × 1.2–1.7 mm;

valves each with obscure or somewhat prominent midvein;

replum straight;

ovules (10–)18–50 per ovary;

style 0.8–2 mm;

stigma entire.

usually ascending to divaricate, rarely reflexed, smooth or slightly torulose, slightly flattened, 2–5 cm × 1.2–1.7 mm;

valves each with obscure midvein;

replum straight;

ovules 22–38 per ovary;

style 0.1–1 mm;

stigma entire.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

oblong, 1–1.5 × 0.7–0.9 mm;

wing (0–)0.05–0.1 mm wide, distal.

= 28.

= 28.