Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 2–6.7 dm, densely pubescent proximally, trichomes short-stalked, 4–8-rayed, 0.1–0.3 mm, glabrous or sparsely pubescent distally.

blade oblanceolate, 2–5 mm wide, margins entire, sometimes ciliate near petiole base, trichomes (usually simple), to 0.7 mm, surfaces sparsely to moderately pubescent, trichomes short-stalked, 4–8-rayed, 0.1–0.3 mm.

7–40, often concealing stem proximally;

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

10–60-flowered, usually unbranched.

divaricate to pendent at anthesis;

sepals pubescent;

petals white, 4–8 × 1–2 mm, glabrous;

pollen ellipsoid or spheroid.

descending to reflexed, most abruptly recurved near base, 5–10 mm, glabrous or sparsely pubescent, trichomes appressed, branched.

descending to reflexed, not appressed to rachis, strongly secund, often curved, edges parallel, 0.35–0.65 cm × (2–)2.2–2.5 mm;

valves glabrous;

ovules 80–102 per ovary.

uniseriate to sub-biseriate, 1.4–1.7 × 1–1.2 mm;

wing continuous, to 0.2 mm wide.

= 14, 21.