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, often somewhat elevated above ground surface on woody base, 1–5 dm, densely pubescent proximally, trichomes simple, 0.5–1 mm, mixed with long-stalked, 2- or 3-rayed ones, 0.1–0.5 mm, moderately to sparsely pubescent distally.

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, 4–8 mm wide, margins denticulate, ciliate along petiole, trichomes to 1 mm, surfaces densely pubescent, trichomes long-stalked, 2–5-rayed, 0.1–0.5 mm.

15–36, sometimes concealing stem proximally;

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

8–25, often concealing stem proximally;

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

20–55-flowered, usually unbranched.

12–34-flowered, usually unbranched.

divaricate-descending at anthesis;

sepals pubescent;

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

pollen spheroid.

ascending at anthesis;

sepals pubescent;

petals purplish, 6–8 × 2–2.5 mm, glabrous;

pollen spheroid.

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

divaricate-ascending to horizontal, straight, 5–10 mm, pubescent, trichomes spreading, simple and 2-rayed.

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.

divaricate-ascending to horizontal, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 4–8 cm × 1.7–2.2 mm;

valves glabrous;

ovules 70–102 per ovary;

style 0.1–0.3 mm.

biseriate to sub-biseriate, mature seeds not seen.

uniseriate, 1.4–1.8 × 1–1.3 mm;

wing continuous, 0.1–0.2 mm wide.