Flora of North America species comparison

1 to several per caudex branch, arising from center of rosette or arising laterally proximal to sterile shoots, somewhat elevated on woody base or from ground surface, 2–5(–9) dm, usually glabrous proximally, rarely sparsely pubescent, trichomes simple and short-stalked, 2- or 3-rayed, 0.1–0.5 mm, glabrous distally.

blade oblanceolate, (3–)5–15 mm wide, margins dentate, ciliate at least along petiole, trichomes to 1 mm, surfaces pubescent, trichomes short-stalked, 2–6-rayed, 0.1–0.5 mm.

5–17(–21), sometimes concealing stem proximally;

blade auricles 0.5–3.5(–5.5) mm, surfaces of distalmost leaves glabrous.

10–30(–70)-flowered, usually unbranched.

ascending at anthesis;

sepals glabrous;

petals lavender, 6.5–8.5 × 1–2.5 mm, glabrous;

pollen spheroid.

horizontal, gently curved downward, 10–27 mm, glabrous.

widely pendent, not appressed to rachis, not secund, usually curved, edges parallel, 3–7 cm × 1.8–2.5 mm;

valves glabrous;

ovules 100–160 per ovary;

style 0.2–0.5 mm.

sub-biseriate, 1.1–1.6 × 0.9–1.1 mm;

wing continuous, 0.1–0.2 mm wide.