Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, (0.6–)1–4.5 dm, densely pubescent proximally, trichomes short-stalked, 4–8-rayed, 0.1–0.4 mm, similarly pubescent distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, (1.4–)3–11.2 dm, densely pubescent proximally, trichomes simple, 0.6–1.5 mm, mixed with stalked, 2- (or 3-)rayed ones, 0.2–0.4 mm, sparsely pubescent distally.

blade linear to linear-oblanceolate, 2–4(–6) mm wide, margins entire, usually ciliate at petiole base, trichomes (simple or spurred), to 1.5 mm, surfaces densely pubescent, trichomes short-stalked, 4–8-rayed, 0.1–0.4 mm.

blade oblanceolate, 3–10 mm wide, margins usually dentate, rarely entire, sometimes ciliate, trichomes (simple or branched), to 1 mm, surfaces densely pubescent, trichomes stalked, 2–5-rayed, 0.3–0.6 mm.

6–10, not concealing stem;

blade auricles absent, surfaces of distalmost leaves densely pubescent.

(8–)14–60, often concealing stem proximally;

blade auricles (1–)3–10 mm, surfaces of distalmost leaves glabrous or sparsely pubescent.

(5–)10–25-flowered, usually unbranched.

17–60-flowered, usually unbranched.

divaricate at anthesis;

sepals pubescent;

petals light purple to lavender, 6–9 × 1.5–2.5 mm, glabrous;

pollen ellipsoid.

divaricate at anthesis;

sepals pubescent;

petals lavender to whitish, 5–8 × 1–2 mm, glabrous;

pollen spheroid.

reflexed, strongly curved at base, 2–10 mm, pubescent, trichomes appressed, branched.

horizontal to divaricate-descending, usually straight, rarely slightly recurved, 4–13 mm, pubescent, trichomes spreading, 2- or 3-rayed.

strongly reflexed, sometimes appressed to rachis, often secund, straight, edges parallel, (1.8–)2.5–4.5 cm × 5–8 mm;

valves glabrous;

ovules 24–62 per ovary;

style 0.2–0.6 mm.

horizontal, divaricate-descending or widely pendent, not appressed to rachis, not secund, curved, edges parallel, 5.5–10.5 cm × 1.5–2.2 mm;

valves glabrous;

ovules 80–162 per ovary;

style 0.05–0.5 mm.

biseriate, 5–6 × 4–5 mm;

wing continuous, 1.8–2.5 mm wide.

uniseriate, 1.4–1.8 × 1–1.4 mm;

wing continuous, 0.1–0.25 mm wide.

= 14.

= 21.