Flora of North America species comparison

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

often branched distally, (2.3–)4.5–12 dm.

(soon withered); rosulate; petiolate;

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

not rosulate; long-petiolate;

blade oblanceolate to spatulate, 5–25 cm, margins lyrately lobed to irregularly dentate.

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

blade oblong to ovate, 3–15 cm × 15–80 mm (smaller distally as bracts), base auriculate to amplexicaul, margins entire or shallowly dentate.

ebracteate, (lax).

bracteate throughout, (proximalmost bracts leaflike, distalmost much reduced).

(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 campanulate;

sepals (ascending to suberect), 8–12 mm, (not saccate basally), not keeled, (inner pair apiculate);

petals purplish, 14–19 mm, blade 7–12 × 5–7 mm, margins not crisped, claw 6–8 mm, (slender), much narrower than blade;

stamens tetradynamous;

filaments: median pairs (distinct), 6–8 mm, lateral pair 4–6 mm;

anthers (all) fertile, 4–6 mm;

gynophore 1–2 mm.

strongly recurved, 2–5 mm.

divaricate-ascending, 7–19 mm, (glabrous or puberulent).

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.

divaricate ascending, smooth, straight, flattened, 8–14.5 cm × 2.5–4 mm;

valves each with prominent midvein;

replum straight;

ovules 48–80 per ovary;

style 1–3.5 mm;

stigma 2-lobed.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

oblong, 3–4 × 2–3 mm;

wing 0.5–0.7 mm wide at apex, continuous.

= 28.