Flora of North America species comparison

simple or few from base, (2–)3–8(–11) dm.

(withered by flowering): blade oblanceolate, (2.5–)3.5–8(–10) cm, base cuneate or attenuate, apex obtuse.

blade apex acute or obtuse.

sepals 2–2.5 mm;

petals narrowly obcordate, (4–)5–6.5(–8) mm (lobes oblong, (1–)1.5–3 × 0.5–1.5 mm);

filaments white, median pair 2–3.3 mm, lateral pair 0.3–1 mm;

anthers 0.5–1 mm.

appressed to rachis, (4–)5–9(–12) mm.

(4–)5–8.5(–10) × (2–)2.5–4 mm;

valves obtuse at both ends, trichomes sometimes with unequal rays;

style 1–4 mm, sparsely pubescent basally.

slightly flattened, narrowly margined, 1–2.3 mm diam. 2n = 16.