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, elevated on woody base above or near ground surface, 0.6–2.8(–3.5) dm, densely pubescent proximally, trichomes short-stalked, 2–5-rayed, 0.1–0.3 mm, glabrous or 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 narrowly oblanceolate, 3–7(–10) mm wide, margins entire, ciliate near petiole base, trichomes (simple or spurred), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 2–4 (or 5)-rayed 0.1–0.3 mm.

4–9, not concealing stem;

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

3–7(–12), not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous or sparsely pubescent.

7–20-flowered, usually unbranched.

2–7-flowered, unbranched.

ascending at anthesis;

sepals pubescent;

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

pollen spheroid.

ascending at anthesis;

sepals pubescent;

petals creamy white to purplish, 4–6 × 1–2 mm, sparsely pubescent (often some trichomes abaxially);

pollen ellipsoid.

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

ascending, straight, 3–13 mm, glabrous or sparsely pubescent, trichomes appressed, branched.

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.

ascending, not appressed to rachis, not secund, straight to slightly curved, edges undulate (not parallel), (2.5–)4–8.5 cm × 3–5.5 mm;

valves glabrous;

ovules 16–44 per ovary;

style 0.05–1 mm.

sub-biseriate, 1.2–1.8 × 0.9–1.2 mm;

wing continuous, 0.1–0.25 mm wide.

uniseriate, 3–6(–8) × 2–3.5 mm;

wing continuous, 0.8–2.5 mm wide.

= 14.