Flora of North America species comparison

unbranched or branched distally, 2.8–13 dm.

branched distally, (1–)2–9(–10.5) dm.

not seen.

not rosulate; petiolate;

blade pinnatisect to pectinate into filiform segments, 2–8 cm.

(shortly petiolate or sessile);

blade usually linear to linear-lanceolate, rarely oblanceolate, 2.5–16 cm × 2–7(–20) mm, (smaller distally), base not auriculate, margins entire.

(petiolate proximally, sessile distally);

blade pectinate or pinnatisect into filiform segments, or (distally) linear-lanceolate to ovate or cordate, 2–12 cm, (segments 0.4–2.7 cm × 0.5–1.5mm), base not auriculate proximally, amplexicaul distally, margins entire distally, becoming bracts.

ebracteate.

bracteate below or between proximalmost 1 or 2 flowers.

(slightly zygomorphic, horizontal to pendent);

calyx campanulate;

sepals purple, lanceolate, 7–11 mm, not keeled;

petals deep purple to magenta or whitish (with purple veins), 13–20 mm, blade 7–12 × 1–4 mm, margins not crisped, claw 5–12 mm, (strongly recurved);

stamens in 3 unequal pairs;

filaments: abaxial pair (connate less than 1/2 their length), 8–14 mm, lateral pair 4–7 mm, adaxial pair (connate ca. 3/4 their length), 7–10 mm;

anthers: abaxial and lateral pairs fertile, 2–3 mm, adaxial pairs sterile, 1–1.5 mm;

gynophore 0.3–3 mm.

calyx urceolate;

sepals yellow or purplish, 5–7 mm, keeled, (apex recurved);

petals pale yellow to whitish (with purple veins, recurved), 8–16 mm, blade 3–6 × 1.5–3.5 mm, margins not crisped, (undulate), claw 5–10 mm, narrower than blade;

stamens in 3 unequal pairs;

filaments (distinct): abaxial pair 2.5–6 mm, lateral pair 1.5–4 mm, adaxial pair 4–8 mm;

anthers: abaxial and lateral pairs fertile, 3.5–4 mm, adaxial pair partially fertile, 1.5–2.3 mm;

gynophore 0.5–1.5 mm.

divaricate-ascending, (straight), 3–10 mm.

divaricate to divaricate-ascending, (straight), 2–10 mm.

divaricate-ascending, smooth, straight or slightly curved inwards, flattened, 3.7–11.2 cm × 1.5–2 mm;

valves each with prominent midvein;

replum straight;

ovules 90–120 per ovary;

style 0.3–1.5 mm;

stigma subentire.

geniculately reflexed, smooth, straight, flattened, 3–9 cm × 1–1.5(–2.2) mm;

valves each with obscure midvein;

replum straight;

ovules (22–)38–80 per ovary;

style 0.2–1 mm;

stigma obscurely 2-lobed.

broadly ovoid, 1.5–1.8 × 1–1.3 mm;

wing 0.1–0.25 mm, continuous.

oblong, 1–1.5(–2.2) × 0.6–1(–1.5) mm;

wing (0–)0.05–0.1(–0.4) mm wide, distal.

= 28.