Flora of North America species comparison

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

unbranched or branched basally, 0.3–3 dm.

(soon withered); rosulate; petiolate;

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

not rosulate; shortly petiolate;

blade obovate, 1–5 cm, margins coarsely to shallowly dentate.

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

blade obovate to oblong, 0.7–6 cm × 2–25 mm, base cuneate or truncate, not auriculate or (distally) minutely ariculate, margins coarsely dentate.

ebracteate, (lax).

ebracteate, (not secund, with a terminal cluster of sterile 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 subcampanulate;

sepals pale green to purplish, ovate, 4–6 mm, not keeled;

petals light purple (with white margins), 6–9 mm, blade 2–3 × 1–1.5 mm, margins crisped, claw 5–6 mm, wider than blade;

stamens in 3 unequal pairs;

filaments: abaxial pair (connate ca. 1/2 their length), 4–5 mm, lateral pair 3–4 mm, adaxial pair (exserted, connate to near apex), 5–6 mm;

anthers: abaxial and adaxial pairs fertile, 1.5–1.8mm, adaxial pair sterile, 0.3–0.5 mm;

gynophore 0.1–0.3 mm.

strongly recurved, 2–5 mm.

divaricate-ascending, (straight), 2–5 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.

divaricate-ascending to suberect, straight, flattened, 4–8.5 cm × 2–2.5 mm;

valves each with prominent midvein;

replum straight;

ovules 34–66 per ovary;

style 0.4–1 mm;

stigma slightly 2-lobed.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

ovoid to suborbicular, 1.6–2 × 1.2–1.8 mm;

wing 0.2–0.35 mm wide, continuous.

= 28.

= 28.