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, elevated on woody base or from near ground surface, 1.5–4.5 dm, densely pubescent proximally, trichomes short-stalked, 2–7-rayed, 0.2–0.5 mm (sometimes mixed with some larger trichomes proximally), sparsely pubescent 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 linear-oblanceolate, 2–5 mm wide, margins entire or denticulate, ciliate at petiole base, trichomes (simple), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 4–8-rayed, 0.15–0.4 mm.

6–25, concealing stem proximally;

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

3–8, not concealing stem;

blade auricles 0.7–2 mm, surfaces of distalmost leaves sparsely pubescent.

10–40-flowered, usually unbranched.

11–22-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

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

pollen ellipsoid.

divaricate-ascending at anthesis;

sepals pubescent;

petals whitish to pale lavender, 7–10 × 1.5–3 mm, glabrous;

pollen spheroid.

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

horizontal, straight or slightly curved, 7–14 mm, pubescent, trichomes appressed, branched.

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.

horizontal, not appressed to rachis, not secund, usually straight, edges parallel, 3.5–5 cm × 1.7–2 mm;

valves glabrous proximally, pubescent distally;

ovules 72–92 per ovary;

style 0.1–0.3 mm.

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

sub-biseriate, 1.1–1.3 × 0.7–1 mm;

wing continuous, ca. 0.1 mm wide.

= 14.