Flora of North America species comparison

1–9 per caudex branch, arising from center or margin of rosette near ground surface, (1.5–)2.5–5.5 dm, densely pubescent proximally, trichomes short-stalked, 2–4-rayed, 0.1–0.5 mm, mixed with some simple ones, to 0.8 mm, glabrous distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.8–6 dm, sparsely pubescent proximally, trichomes short-stalked and simple, (scattered), 2-rayed, 0.1–0.15 mm, glabrous distally.

blade oblanceolate, 2–9 mm wide, margins shallowly dentate or sometimes entire, ciliate proximally, trichomes (simple and spurred), to 1.2 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 4–6(–8)-rayed, 0.1–0.5 mm.

blade oblanceolate, 4–10 mm wide, margins usually dentate, not ciliate, surfaces densely pubescent, trichomes short-stalked, 3- or 4-rayed, 0.1–0.2 mm.

4–9, not concealing stem;

blade auricles 1–3 mm, surfaces of distalmost leaves usually glabrous.

7–25, concealing stem proximally;

blade auricles 1–4 mm, surfaces of distalmost leaves glabrous.

7–20-flowered, usually unbranched.

6–20-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 6–7 × 1.5–2 mm, glabrous;

pollen spheroid.

ascending at anthesis;

sepals pubescent;

petals dark reddish purple (drying indigo), 7–9 × 1.5–2 mm, glabrous;

pollen ellipsoid.

divaricate-ascending, gently curved downward, (7–)10–18 mm, glabrous.

ascending, usually straight, 5–10 mm, glabrous or pubescent, trichomes spreading, simple.

usually widely pendent, rarely horizontal, not appressed to rachis, not secund, slightly curved, edges parallel, (3–)4.5–7 cm × 1.7–2 mm;

valves glabrous;

ovules 60–96 per ovary;

style 0.1–0.3 mm.

ascending, not appressed to rachis, not secund, curved or straight, edges parallel, (4–)6–12 cm × 1.7–2.2 mm;

valves glabrous;

ovules 80–100 per ovary;

style 0.2–0.5 mm.

sub-biseriate, 1.2–1.8 × 0.9–1.2 mm;

wing continuous, 0.1–0.25 mm wide.

uniseriate, 1.2–1.7 × 0.9–1.2 mm;

wing lateral and distal, 0.1–0.2 mm wide.