Flora of North America species comparison

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

branched basally, (0.7–)1–6.7(–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;

petiolate;

blade oblanceolate or oblong to lanceolate, 2–5(–7) cm (5–15 mm wide), margins remotely dentate.

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

blade linear to linear-lanceolate, (1.5–)3–9(–10) cm × 0.5–2 mm (smaller distally), base not auriculate, margins entire.

ebracteate, (lax).

ebracteate, (lax, often secund).

(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), green to purplish, (ovate), 4–6 mm, slightly keeled, (apex recurved, glabrous or hirsute, trichomes retrorse);

petals white (abaxial pair with purplish veins), 6–9 mm, blade 2–4 × 1.5–2.5 mm, margins not crisped, claw 4–6 mm, narrower than blade;

stamens in 3 unequal pairs;

filaments: abaxial pair (connate to middle), 4.5–5.5 mm, lateral pair 2.5–3.5 mm, adaxial pair (connate, strongly recurved, purplish), 7–9 mm;

anthers: abaxial and lateral pairs fertile, 1.5–2.2mm, adaxial pair sterile, 0.4–1 mm;

gynophore 0.3–1 mm.

strongly recurved, 2–5 mm.

ascending to divaricate, 1–2.5(–4) 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 reflexed, slightly torulose, curved or, rarely, straight, slightly flattened, 2–6(–7) cm × 1.2–1.5 mm;

valves each with obscure midvein;

replum straight;

ovules 22–38 per ovary;

style 0.1–0.7 mm;

stigma entire.

oblong, 1.7–2 × 0.9–1.1 mm;

wing 0.2–0.3 mm wide, distal.

narrowly oblong, 1.3–1.8x 0.6–0.8 mm;

wing (0–)0.1–0.25 mm wide distally, (narrower at margin or absent).

= 28.

= 28.