Flora of North America species comparison

branched basally and/or distally, (2.1–)3–6.5(–7.5) dm.

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

rosulate; petiolate;

blade pinnatifid or oblanceolate, 3.5–15(–30) cm, margins runcinate-pinnatifid, dentate, or entire.

(soon withered); rosulate; petiolate;

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

blade ovate to lanceolate, 2.5–14 cm × 4–55 mm, (smaller distally), base auriculate to amplexicaul, margins runcinate-pinnatifid, dentate, or entire (usually entire distally).

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

ebracteate, (lax).

ebracteate, (lax).

calyx urceolate or campanulate;

sepals purple, or ochroleucous to yellowish, 8–11 mm, keeled;

petals white (with purplish veins) or purple (with white margins, recurved), 14–18 mm, blade 5–8 × 1–1.5 mm, margins crisped, claw 9–12 mm, about as wide as blade;

stamens in 3 unequal pairs;

filaments (distinct): abaxial pair 6–10 mm, lateral pair 4–7 mm, adaxial pair (exserted), 9–12 mm;

anthers (all) fertile, 4–5 mm;

gynophore 0.5–2 mm.

(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.

divaricate-ascending, (straight or curved upward), 7–22(–35) mm.

strongly recurved, 2–5 mm.

ascending, smooth, straight, strongly flattened, 3–8 cm × 4.5–6 mm;

valves each with obscure midvein;

replum straight;

ovules 26–54 per ovary;

style 0.5–2 mm;

stigma strongly 2-lobed.

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.

orbicular, 3–5 mm diam.;

wing 0.6–1.1 mm wide, continuous.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

= 28.

= 28.