Flora of North America species comparison

usually 2–7 per caudex branch, arising from margin of rosette near ground surface, 0.5–2(–3) dm, densely pubescent proximally, trichomes simple and stalked, 2-rayed, 0.3–0.8 mm, glabrous distally.

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.

blade narrowly oblanceolate, 1–3 mm wide, margins entire, ciliate, trichomes to 1 mm, surfaces pubescent, trichomes stalked, 2–4-rayed, 0.3–0.8 mm.

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.

3–7(–10), not concealing stem;

blade auricles 0.2–1 mm, surfaces of distalmost leaves glabrous.

3–7, not concealing stem;

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

6–15-flowered, unbranched.

5–12-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals white or lavender, 5–7 × 1.5–2.5 mm, glabrous;

pollen spheroid.

ascending at anthesis;

sepals pubescent;

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

pollen spheroid.

horizontal to divaricate-ascending, straight, 3–9 mm, glabrous.

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

horizontal to divaricate-ascending, not appressed to rachis, not secund, usually strongly curved, edges parallel, 3.5–6.5 cm × 1.7–2 mm;

valves glabrous;

ovules 50–84 per ovary;

style 0.05–0.5 mm.

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.

uniseriate, 1.5–2 × 1.1–1.5 mm;

wing continuous, 0.1–0.2 mm wide.

uniseriate, 1.1–1.3 × 0.8–1.1 mm;

wing continuous, 0.08–0.1 mm wide.