Flora of North America species comparison

1–9 per caudex branch, arising from center or margin of rosette near ground surface, (1.5–)2.5–5.5 dm, densely pubescent proximally, trichomes short-stalked, 2–4-rayed, 0.1–0.5 mm, mixed with some simple ones, to 0.8 mm, glabrous 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 oblanceolate, 2–9 mm wide, margins shallowly dentate or sometimes entire, ciliate proximally, trichomes (simple and spurred), to 1.2 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 4–6(–8)-rayed, 0.1–0.5 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.

4–9, not concealing stem;

blade auricles 1–3 mm, surfaces of distalmost leaves usually glabrous.

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

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

7–20-flowered, usually unbranched.

17–60-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 6–7 × 1.5–2 mm, glabrous;

pollen spheroid.

divaricate at anthesis;

sepals pubescent;

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

pollen spheroid.

divaricate-ascending, gently curved downward, (7–)10–18 mm, glabrous.

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

usually widely pendent, rarely horizontal, not appressed to rachis, not secund, slightly curved, edges parallel, (3–)4.5–7 cm × 1.7–2 mm;

valves glabrous;

ovules 60–96 per ovary;

style 0.1–0.3 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.

sub-biseriate, 1.2–1.8 × 0.9–1.2 mm;

wing continuous, 0.1–0.25 mm wide.

uniseriate, 1.4–1.8 × 1–1.4 mm;

wing continuous, 0.1–0.25 mm wide.

= 21.