Flora of North America species comparison

3 to many per caudex branch, arising from margin of rosette near ground surface, 3.5–6 dm, pubescent proximally, trichomes short-stalked, 2–4-rayed, 0.2–0.3 mm, glabrous distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.5–2.5 dm, glabrous throughout.

blade oblanceolate, 3–7 mm wide, margins dentate, ciliate proximally, trichomes (simple), to 0.3 mm, surfaces pubescent, trichomes short-stalked, 4–8-rayed, 0.05–0.2 mm.

blade oblanceolate, 1.5–5 mm wide, margins entire, ciliate proximally, trichomes (simple), to 0.4 mm, and distally, trichomes short-stalked, 2 or 3 (or 4)-rayed, 0.15–0.4 mm, surfaces glabrous.

5–10, not concealing stem;

blade auricles 0.5–1 mm, surfaces of distalmost leaves glabrous.

2–7, not concealing stem;

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

10–18-flowered, usually unbranched.

2–9-flowered, unbranched.

divaricate-ascending at anthesis;

sepals pubescent;

petals lavender, 4–6 × 1–1.5 mm, glabrous;

pollen spheroid.

ascending at anthesis;

sepals glabrous;

petals lavender to purplish, 5–6 × 1–2 mm, glabrous;

pollen spheroid.

divaricate-descending, straight, 5–10 mm, glabrous.

ascending to suberect, straight, 6–20 mm, glabrous.

divaricate-descending, not appressed to rachis, not secund, curved, edges parallel, 4–6 cm × 1.5–1.8 mm;

valves glabrous;

ovules 60–70 per ovary;

style 0.1–0.4 mm.

ascending to suberect, rarely appressed to rachis, not secund, straight, edges slightly undulate (rarely parallel), 3.5–5 cm × 3–5 mm;

valves glabrous;

ovules 18–30 per ovary;

style 0.2–1 mm.

uniseriate, 1.5–2 × 1–1.3 mm;

wing distal, ca. 0.1 mm wide.

uniseriate, 4–5 × 3–4 mm;

wing continuous, 1–1.5 mm wide.