Flora of North America species comparison

unbranched or branched (few), 2.5–8.6 dm.

unbranched or branched distally, 1.2–6 dm.

not rosulate; petiolate (petioles ciliate);

blade oblanceolate to spatulate, 2–8 cm (7–-25 mm wide), margins remotely dentate apically.

not rosulate; shortly petiolate;

blade lanceolate to oblanceolate, 2–8 cm, margins coarsely dentate to pinnatifid.

blade ovate to lanceolate, 2–10 cm × 5–28 mm (smaller distally), base amplexicaul, margins entire, (apex acute to acuminate).

blade lanceolate, 1.3–9 cm × 2–20 mm, (smaller distally), base auriculate, margins dentate.

ebracteate, (lax in bud).

ebracteate, (lax, with a terminal cluster of dark purple or greenish yellow sterile flowers).

calyx campanulate;

sepals (ascending), pale yellow to white, (broadly oblong to ovate) 5–9 mm, not keeled;

petals white, 7–11 mm, blade 2–4 × 1–1.3 mm, margins not crisped, claw 6–9 mm, wider than blade;

stamens nearly tetradynamous;

filaments: median pairs (distinct), 6.5–8.5 mm, lateral pair 4.5–5.5 mm;

anthers (all) fertile, 3.5–4.5 mm;

gynophore 0.5–1.5 mm.

calyx campanulate;

sepals (of fertile flowers) dark purple, purplish, or greenish yellow, (oblong to lanceolate), 4–6 mm, (8–14 mm in sterile flowers), not or slightly keeled, (hirsute-hispid in fertile flowers, glabrous in sterile flowers);

petals: (abaxial pair spreading and reflexed, adaxial pair parallel and erect), purplish white, lemon-yellow, or yellowish white (with darker midvein), 7–12 mm, blade 2–4 × 1–2 mm, margins crisped, claw 5–8 mm, about as wide as blade;

stamens in 3 unequal pairs;

filaments: abaxial pair (distinct), 4–6 mm, lateral pair 3–4 mm, adaxial pair (connate their entire length), 6–9 mm;

anthers: abaxial and lateral pairs fertile, 1.3–2 mm, adaxial pairs sterile, 0.2–0.7 mm;

gynophore 0.4–1 mm.

divaricate-ascending, (straight), 4–7.5 mm.

divaricate to ascending, (straight, curved upward, or recurved), 3–8 mm.

ascending to spreading, smooth, straight or curved, flattened, 5–12.7 cm × 1.5–3 mm;

valves each with obscure midvein (at least distally);

replum straight;

ovules 36–56 per ovary;

style 0.8–2.5 mm;

stigma subentire.

ascending or reflexed, smooth, straight or slightly curved, flattened, 3.5–11.4 cm × 1.5–2 mm;

valves each with prominent midvein, (glabrate or sparsely to densely hispid, trichomes to 1.7 mm);

replum straight;

ovules 32–94 per ovary;

style 1–2 mm;

stigma entire.

oblong, 2–3 × 1.4–2 mm;

wing 0.1–0.2 mm wide at apex.

broadly oblong, 1.4–2 × 1–1.3 mm;

wing 0.15–0.3 mm wide, continuous.

= 28.