Flora of North America species comparison

usually 2–4 per plant or caudex branch, arising from margin of rosette near ground surface, or arising laterally proximal to sterile shoots, 2–6 dm, pubescent proximally, trichomes short-stalked, 2–4-rayed, 0.15–0.4 mm, sparsely pubescent or glabrous distally.

1–7 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1.5–5.5(–8) dm, densely pubescent proximally, trichomes simple and long-stalked, 2-rayed, 0.2–0.9 mm, glabrous distally.

blade obovate to oblanceolate, (6–)10–45 mm wide, margins dentate, not ciliate, surfaces sparsely pubescent, abaxially trichomes short-stalked, 3- or 4-rayed, 0.15–0.4 mm, adaxially simple ones, 0.4–1 mm.

blade broadly oblanceolate, 5–15(–20) mm wide, margins dentate, ciliate, trichomes (simple), to 1.2 mm, surfaces glabrous or pubescent, trichomes simple and long-stalked, usually 2-rayed, rarely some 3-rayed, 0.2–0.6 mm.

4–20, rarely concealing stem;

blade auricles 1–8 mm, surfaces of distalmost leaves sparsely pubescent.

8–25, often concealing stem proximally;

blade auricles 0.8–3 mm, surfaces of distalmost leaves often glabrous.

14–66-flowered, sparingly branched.

6–40(–74)-flowered, usually unbranched.

divaricate at anthesis;

sepals glabrous or sparsely pubescent;

petals white or cream, 2–3.5 × 0.7–1 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals sparsely hirsute;

petals usually lavender, rarely white, 5–9 × 1–2 mm;

pollen ellipsoid.

divaricate-ascending to slightly descending, straight, 1–6 mm, glabrous or pubescent, trichomes appressed, branched.

horizontal to divaricate-ascending, curved or angled downward, 9–18(–23) mm, usually glabrous, rarely sparsely pubescent, trichomes spreading, simple.

divaricate-ascending to slightly descending, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 1.3–4.2 cm × 0.7–0.8 mm;

valves usually sparsely pubescent throughout, rarely glabrous;

ovules 14–44 per ovary;

style 0.1–0.5 mm.

widely pendent, not appressed to rachis, not secund, curved to nearly straight, edges parallel, 3–5.8 cm × 1.5–2 mm;

valves glabrous;

ovules 98–128 per ovary;

style 0.2–0.5 mm.

uniseriate, 0.7–1.1 × 0.5–0.6 mm;

not winged.

biseriate, 0.9–1.2 × 0.6–0.8 mm;

wing distal (sometimes absent), 0.05–0.15 mm wide.

= 14.