Flora of North America species comparison

usually 3–7 per caudex branch, arising from margin of rosette near ground surface, 0.5–2.5 dm, usually sparsely pubescent proximally, rarely glabrous, trichomes short-stalked, 2- or 3-rayed, 0.06–0.2 mm, glabrous distally.

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.

blade narrowly oblanceolate, 2–4 mm wide, margins entire or somewhat dentate, ciliate near petiole base, trichomes (simple), to 0.5 mm, surfaces sparsely pubescent, trichomes short-stalked, 2–5-rayed, 0.1–0.25 mm.

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.

3–7, not concealing stem;

blade auricles 0.5–1.5 mm, surfaces of distalmost leaves glabrous.

5–10, not concealing stem;

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

5–12-flowered, usually unbranched.

10–18-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 5–7.5 × 0.8–1.5 mm, glabrous;

pollen spheroid.

divaricate-ascending at anthesis;

sepals pubescent;

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

pollen spheroid.

divaricate-ascending, straight, 8–12 mm, glabrous.

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

usually divaricate-ascending, rarely nearly horizontal, not appressed to rachis, not secund, curved to straight, edges parallel, 3–4.7 cm × 1–1.5 mm;

valves glabrous;

ovules 64–86 per ovary;

style 0.2–0.5 mm.

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.

uniseriate, 1.1–1.3 × 0.8–1.1 mm;

wing continuous, 0.08–0.1 mm wide.

uniseriate, 1.5–2 × 1–1.3 mm;

wing distal, ca. 0.1 mm wide.