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, 1–2.5 dm, glabrous or sparsely pubescent proximally, trichomes short-stalked, 2–5-rayed (rarely, some simple), 0.4–0.6 mm, glabrous distally.

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, 2.5–6 mm wide, margins entire, ciliate proximally, trichomes (simple), surfaces densely pubescent, trichomes short-stalked, 4–7-rayed, 0.3–0.5 mm.

5–10, not concealing stem;

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

3–12, often concealing stem proximally;

blade auricles 0.5–2 mm, surfaces of distalmost leaves usually glabrous, sometimes margins ciliate.

10–18-flowered, usually unbranched.

12–25-flowered, usually unbranched.

divaricate-ascending at anthesis;

sepals pubescent;

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

pollen spheroid.

ascending at anthesis;

sepals pubescent;

petals purple, 5–6 × 1.5–2 mm, glabrous;

pollen spheroid.

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

ascending to divaricate-descending, straight, 2–6 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 divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 2–3.7 cm × 2–2.8 mm;

valves glabrous;

ovules 56–80 per ovary;

style 0.1–0.3 mm.

uniseriate, 1.5–2 × 1–1.3 mm;

wing distal, ca. 0.1 mm wide.

uniseriate, 1–1.5 × 0.8–1 mm;

wing distal or continuous, 0.05–0.1 mm wide.