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, 0.5–1.8 dm, densely pubescent proximally, trichomes short-stalked, 5–8-rayed, 0.1–0.2, sparsely to moderately pubescent 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 narrowly oblanceolate, 1–2 mm wide, margins entire, ciliate along petiole, trichomes (branched), to 0.5 mm, surfaces densely pubescent, trichomes short-stalked, 5–8-rayed, 0.1–0.2 mm.

5–10, not concealing stem;

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

4–14, rarely concealing stem proximally;

blade auricles 0.1–0.5 mm, surfaces of distalmost leaves densely pubescent.

10–18-flowered, usually unbranched.

10–20-flowered, 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, 6–8 × 1.5–2.5 mm, glabrous;

pollen ellipsoid.

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

divaricate-descending or horizontal, nearly straight, 3–7 mm, pubescent, trichomes appressed, branched.

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.

usually divaricate-descending or horizontal, rarely widely pendent, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 3–4.5 cm × 2.5–3 mm;

valves sparsely pubescent to glabrate;

ovules 20–24 per ovary;

style 1.5–2 mm.

uniseriate, 1.5–2 × 1–1.3 mm;

wing distal, ca. 0.1 mm wide.

uniseriate, 2–2.5 × 1.5–1.8 mm;

wing continuous, to 0.2 mm wide.