Flora of North America species comparison

usually 3–7 per caudex branch, arising from margin of rosette near ground surface, 0.5–2.5 dm, usually sparsely pubescent proximally, rarely glabrous, trichomes short-stalked, 2- or 3-rayed, 0.06–0.2 mm, glabrous distally.

usually 2–5 per caudex branch, arising from margin of rosette near ground surface, 0.8–2(–3) dm, glabrous throughout.

blade narrowly oblanceolate, 2–4 mm wide, margins entire or somewhat dentate, ciliate near petiole base, trichomes (simple), to 0.5 mm, surfaces sparsely pubescent, trichomes short-stalked, 2–5-rayed, 0.1–0.25 mm.

blade oblanceolate, (2–)3–7 mm wide, margins usually entire, rarely denticulate, ciliate, trichomes (simple and short-stalked) 2- or 3-rayed, 0.2–0.4 mm, surfaces glabrous.

3–7, not concealing stem;

blade auricles 0.5–1.5 mm, surfaces of distalmost leaves glabrous.

3–5, not concealing stem;

blade auricles absent or, rarely, to 0.5 mm, surfaces of distalmost leaves glabrous.

5–12-flowered, usually unbranched.

10–16-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 5–7.5 × 0.8–1.5 mm, glabrous;

pollen spheroid.

ascending at anthesis;

sepals glabrous;

petals white to lavender, 4–5 × 1.2–1.7 mm, glabrous;

pollen ellipsoid.

divaricate-ascending, straight, 8–12 mm, glabrous.

ascending, straight, 3–7 mm, glabrous.

usually divaricate-ascending, rarely nearly horizontal, not appressed to rachis, not secund, curved to straight, edges parallel, 3–4.7 cm × 1–1.5 mm;

valves glabrous;

ovules 64–86 per ovary;

style 0.2–0.5 mm.

ascending, not appressed to rachis, not secund, straight, edges parallel, 1.5–3.7 cm × 1.4–1.7 mm;

valves glabrous;

ovules 14–22 per ovary;

style 0.2–0.6 mm.

uniseriate, 1.1–1.3 × 0.8–1.1 mm;

wing continuous, 0.08–0.1 mm wide.

uniseriate, 1.7–2.2 × 1–1.2 mm;

wing absent or distal, 0–0.5 mm wide.