Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.9–3 dm, densely pubescent proximally, trichomes short-stalked, 5–12-rayed, 0.1–0.3 mm, sparsely pubescent to glabrescent distally.

usually 2–5 per caudex branch, arising from margin of rosette near ground surface, or arising laterally proximal to sterile shoots, 0.2–0.8 dm, pubescent proximally, trichomes simple and short-stalked, 2- or 3-rayed, to 0.4 mm, glabrescent distally.

blade linear-oblanceolate, 2–5 mm wide, margins entire, not ciliate, surfaces densely pubescent, trichomes short-stalked, 5–12(–16)-rayed, 0.1–0.3 mm.

blade linear, 0.8–1.5 mm wide, margins entire, ciliate, trichomes (simple and spurred), to 0.8 mm, surfaces moderately pubescent, trichomes short-stalked, 2–4-rayed, 0.05–0.4 mm.

1–5, not concealing stem;

blade without auricles, surfaces of distalmost leaves pubescent.

2–4, not concealing stem;

blade auricles absent, surfaces of distalmost leaves pubescent.

4–15(–20)-flowered, unbranched.

2–5-flowered, unbranched.

ascending at anthesis;

sepals pubescent;

petals purple to lavender, 3.5–6 × 1–1.5 mm, glabrous;

pollen ellipsoid.

erect at anthesis;

sepals pubescent;

petals white, 3.5–5 × 0.7–1 mm, glabrous;

pollen ellipsoid.

ascending, straight, 4–15(–25) mm, pubescent, trichomes appressed, branched.

erect to ascending, straight, 2–7 mm, usually pubescent, rarely glabrous, trichomes subappressed, branched.

divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 4–7.3 cm × 2.7–4 mm;

valves glabrous;

ovules 44–52 per ovary;

style 0.05–0.1 mm.

erect to ascending, often appressed to rachis, not secund, straight, edges parallel, (1.3–)2–3.3 cm × 4–5 mm;

valves glabrous;

ovules 8–12 per ovary;

style 0.05–0.4 mm.

uniseriate, 1.9–2.3 mm in diam.;

wing continuous, 0.3–0.5 mm wide.

uniseriate, 3–5 × 2.5–4.5 mm;

wing continuous, 0.8–2 mm wide distally.