Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 1.5–5 dm, densely pubescent proximally, trichomes short-stalked, 2–6-rayed, 0.2–0.5 mm, glabrous or sparsely pubescent distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 2.6–7.4(–10.2) dm, densely pubescent proximally, trichomes short-stalked, 4–8-rayed, 0.1–0.5 mm, sometimes mixed with 2- or 3-rayed ones, to 1 mm, usually sparsely pubescent distally, rarely glabrous.

blade oblanceolate, 2–10 mm wide, margins usually dentate, sometimes ciliate near petiole base, trichomes (usually spurred), to 0.7 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 4–8-rayed, 0.1–0.4 mm.

blade oblanceolate, 3–8(–10) mm wide, margins entire or shallowly dentate, ciliate near petiole base, trichomes (simple), to 1 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 4–8-rayed, 0.15–0.4 mm.

15–36, sometimes concealing stem proximally;

blade auricles 1–3 mm, surfaces of distalmost leaves sparsely pubescent.

22–72, concealing stem proximally;

blade auricles 1–4 mm, surfaces of distalmost leaves sparsely pubescent or glabrous.

20–55-flowered, usually unbranched.

25–112-flowered, usually unbranched.

divaricate-descending at anthesis;

sepals pubescent;

petals pale lavender, 5–8.5 × 1–2 mm, glabrous;

pollen spheroid.

divaricate-ascending at anthesis;

sepals pubescent;

petals white to lavender, 6–8 × 1–1.5 mm, glabrous;

pollen spheroid.

reflexed to divaricate-descending, usually curved downward, 8–14 mm, usually pubescent, rarely glabrous, trichomes subappressed, branched.

divaricate-descending, straight or gently curved, (10–)15–28 mm, usually sparsely pubescent, rarely glabrous, trichomes appressed, branched.

reflexed to pendent, rarely appressed to rachis, not secund, straight or slightly curved, edges parallel, 4–6 cm × 1–2 mm;

valves glabrous;

ovules 100–128 per ovary;

style 0.05–0.5 mm.

pendent, not appressed to rachis, not secund, straight or gently curved, edges parallel, 4.5–6.5 cm × 1.5–3 mm;

valves glabrous;

ovules 100–136 per ovary;

style to 0.2 mm.

biseriate to sub-biseriate, mature seeds not seen.

biseriate or sub-biseriate, 1–1.4 × 0.9–1 mm;

wing continuous, 0.05–0.15 mm.