Flora of North America species comparison

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.

usually 1 per caudex branch, arising from center of rosette near ground surface, 1.5–6 dm, densely pubescent proximally, trichomes sessile, 2–4-rayed, 0.15–0.4 mm, usually sparsely pubescent distally, rarely glabrous.

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.

blade oblanceolate, 1.5–6 mm wide, margins usually entire, rarely denticulate, ciliate proximally, trichomes (simple), to 0.5 mm, surfaces sparsely to moderately pubescent, trichomes sessile, 3–5 (or 6)-rayed, 0.15–0.35 mm.

7–25, concealing stem proximally;

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

2–20(–38), often concealing stem proximally;

blade auricles 0.3–2 mm, surfaces of distalmost leaves sparsely pubescent or glabrous.

6–20-flowered, usually unbranched.

5–20(–36)-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

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

pollen ellipsoid.

ascending at anthesis;

sepals pubescent;

petals white or lavender, 5–7 × 0.9–1.3 mm, glabrous;

pollen spheroid.

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

erect to ascending, usually straight, 3–10 mm, pubescent or glabrous, trichomes appressed, branched.

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.

ascending, not appressed to rachis, not secund, straight, edges parallel, 2.5–7.5 cm × 1.2–1.8 mm;

valves glabrous;

ovules 46–100 per ovary;

style 0.3–1 mm.

uniseriate, 1.2–1.7 × 0.9–1.2 mm;

wing lateral and distal, 0.1–0.2 mm wide.

uniseriate, 1.8–2.2 × 1–1.4 mm;

wing continuous, 0.1–0.4 mm wide.