Flora of North America species comparison

usually 2–5 per plant, arising from margin of rosette near ground surface, (1–)2–8 dm, densely pubescent proximally, trichomes short-stalked, 3- or 4-rayed, 0.1–0.5 mm, similarly pubescent distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, (1.2–)2–12 dm, glabrous or pubescent proximally, trichomes simple and sessile or subsessile, 2 or 3(–6)-rayed, to 1 mm, glabrous distally.

blade obovate to oblanceolate, (5–)10–45 mm wide, margins usually coarsely dentate, rarely sinuate, ciliate on petiole base, surfaces moderately pubescent, trichomes short-stalked, 3- or 4(–6)-rayed, 0.1–0.5 mm.

blade oblanceolate, 1.5–10(–20) mm wide, margins entire or dentate, ciliate proximally, trichomes (simple), to 1 mm, surfaces sparsely to densely pubescent, trichomes sessile or subsessile, 2–4(–7)-rayed, 0.2–0.6 mm.

6–25, concealing stem proximally;

blade auricles 1–6 mm, surfaces of distalmost leaves pubescent.

(10–)13–52, often concealing stem proximally;

blade auricles 1–5 mm, surfaces of distalmost leaves glabrous.

10–40-flowered, usually unbranched.

16–88-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals purplish, 3–4 × 0.7–1 mm, glabrous;

pollen ellipsoid.

divaricate at anthesis;

sepals glabrous or pubescent;

petals usually white, rarely lavender, 5.5–8 × 1–2 mm, glabrous;

pollen spheroid.

usually horizontal, usually straight, rarely slightly curved, 5–15 mm, pubescent, trichomes spreading, simple.

divaricate-ascending to descending, usually gently curved downward, rarely straight, 5–22(–30) mm, glabrous.

usually horizontal, not appressed to rachis, not secund, straight, edges parallel, (1.5–)2–3.3 cm × 0.8–1 mm;

valves sparsely pubescent throughout;

ovules 12–20 per ovary;

style 0.4–0.8 mm.

divaricate-ascending to pendent, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 3.5–9 cm × 1–1.8 mm;

valves glabrous;

ovules 84–146 per ovary;

style 0.05–0.5 mm.

uniseriate, 0.8–1.1 × 0.6–0.8 mm, not winged.

uniseriate to sub-biseriate, 1–1.8 × 0.8–1.2 mm;

wing continuous, 0.1–0.25 mm wide.

= 14.

= 21.