Flora of North America species comparison

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

unbranched or branched (several) basally and distally, (0.5–)1.5–12(–15) dm.

(soon withered); rosulate;

petiolate;

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

(soon withered);

subrosulate;

petiolate;

blade broadly ovate, obovate or oblong, 1.5–6 cm, margins entire or repand, or dentate apically.

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

blade oblong to obovate or suborbicular, or (distally) orbicular or oblong-ovate, (0.7–)1.5–6(–9) cm × (4–)10–45 mm, base auriculate to amplexicaul (amplexicaul distally), margins entire or repand.

ebracteate, (lax).

bracteate below or between proximalmost 1 or 2 flowers, (lax to compact, secund or not).

(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 urceolate;

sepals purplish, gray-green, or yellowish, 6–10(–13) mm, keeled or not, (apex recurved);

petals purplish or yellowish white (usually with purple veins), (6–)8–14 mm, blade 2–5 × 1–2.5 mm, margins not crisped, claw 4–10 mm, as wide as or wider than blade, (apex reflexed);

stamens in 3 unequal pairs;

filaments (distinct): abaxial pair (2.5–)4–7 mm, lateral pair (1.5–)3–5 mm, adaxial pair (5–)7–11 mm;

anthers (all) fertile or adaxial pair with reduced fertility and shorter, (1.5–)2.5–4.5(–6) mm;

gynophore 0.2–1 mm.

strongly recurved, 2–5 mm.

divaricate to ascending, (2–)3–12(–17) mm, (expanded at receptacle).

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.

arcuate-spreading to pendent, torulose or smooth, straight, flattened, (3–)4–13(–16) cm × 1.5–2.5(–3) mm;

valves each with obscure or somewhat prominent midvein;

replum straight;

ovules 26–76(–110) per ovary;

style 0.4–0.7 mm;

stigma entire.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

broadly oblong to ovoid or orbicular, 1.5–2.5 × 0.8–1.7 mm;

wing 0.1–0.5 mm wide, continuous or on distal 1/2.

= 28.

= 28.