Flora of North America species comparison

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

unbranched or branched basally, (0.5–)1.5–6.5(–8) dm.

(soon withered); rosulate; petiolate;

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

(soon withered);

not rosulate; shortly petiolate;

blade broadly ovate to obovate, 1.5–4 cm, margins entire or coarsely dentate.

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

blade ovate or (distally) narrowly lanceolate, 1.5–10 cm × 3–45 mm, (much smaller distally), base amplexicaul, margins entire.

ebracteate, (lax).

ebracteate, (sometimes secund, rachis straight).

(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 (erect), purple or white, (ovate), 5–7 mm, keeled, (ribbed, apex recurved);

petals (recurved), white (with purple veins or adaxial pair white), 8–12 mm, blade 2–5 × 1–2 mm, margins not crisped, claw 5–7 mm, about as wide as blade;

stamens in 3 unequal pairs;

filaments: abaxial pair (connate proximally), 5–6 mm, lateral pair 3–4 mm, adaxial pair (connate, recurved or not), 7–10 mm;

anthers: abaxial and lateral pairs fertile, 2–3 mm, adaxial pair sterile, 0.6–1.3 mm;

gynophore 0.2–0.5 mm.

strongly recurved, 2–5 mm.

divaricate-ascending to suberect, 1.5–5(–6) 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.

erect to ascending or recurved, usually strongly arcuate, rarely straight, slightly flattened, 3–9 cm × 1–1.5 mm;

valves each with obscure midvein;

replum straight;

ovules 24–54 per ovary;

style 0.2–0.5 mm;

stigma entire.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

broadly oblong, 1–1.5 × 0.7–1 mm;

wing (0–)0.1 mm wide distally.

= 28.

= 28.