Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, (1.2–)2.5–6 dm, densely pubescent proximally, trichomes short-stalked, 4–10-rayed, 0.1–0.2 mm, sparsely pubescent or glabrous distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 2–6 dm, pubescent proximally, trichomes sessile, 2- or 3-rayed, 0.15–0.6 mm, glabrous distally.

blade linear to narrowly oblanceolate, 1–4 mm wide, margins entire, ciliate near petiole base, trichomes (simple), to 0.6 mm, surfaces densely pubescent, trichomes short-stalked, 4–10-rayed, 0.1–0.2 mm.

blade oblanceolate, 1.5–5(–7) mm wide, margins usually entire, rarely denticulate, ciliate at petiole base, trichomes to 0.4 mm, surfaces pubescent, trichomes sessile, 2–4(–6)-rayed, 0.1–0.45 mm.

5–10, not concealing stem;

blade auricles 1–1.5 mm, surfaces of distalmost leaves usually sparsely pubescent.

(7–)13–42, concealing stem proximally;

blade auricles 1–4 mm, surfaces of distalmost leaves sparsely pubescent apically.

10–25-flowered, often sparingly branched.

(7–)14–45-flowered, usually unbranched.

divaricate-ascending at anthesis;

sepals pubescent;

petals white to lavender, 3.5–6 × 0.7–1 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals glabrous;

petals lavender, 6–10 × 1.5–2 mm, glabrous;

pollen spheroid.

divaricate-ascending to horizontal, often straight proximally, usually strongly recurved or reflexed distally, 4–17 mm, usually pubescent, rarely glabrous, trichomes appressed, branched.

erect, straight, 5–12 mm, glabrous.

pendent, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 2.5–5.5 cm × 1.7–2.5 mm;

valves glabrous;

ovules 34–64 per ovary;

style 0.05–0.2 mm.

erect, appressed to rachis, not secund, straight, edges parallel, 4–6.5 cm × 1.5–2 mm;

valves glabrous;

ovules 60–140 per ovary;

style 0.1–0.3 mm.

uniseriate, 1.4–1.8 × 1–1.2 mm;

wing continuous, 0.25–0.5 mm wide.

sub-biseriate, 1.4–2 × 1–1.4 mm;

wing continuous, 0.1–0.35 mm wide.

= 14.