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.

1–3 per caudex branch, arising from margin of rosette near ground surface, 0.4–1.6 dm, densely pubescent proximally, trichomes short-stalked, 2–5-rayed, 0.05–0.2 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.

(petiole glabrous);

blade linear-oblanceolate, 1–3 mm wide, margins entire, rarely ciliate proximally, trichomes to 0.5 mm, surfaces densely pubescent, trichomes short-stalked, 2–5-rayed, 0.05–0.2 mm.

7–40, often concealing stem proximally;

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

3–6, not concealing stem;

blade auricles 0(–0.3) mm, surfaces of distalmost leaves sparsely to moderately pubescent.

10–60-flowered, usually unbranched.

5–8-flowered, unbranched.

divaricate to pendent at anthesis;

sepals pubescent;

petals white, 4–8 × 1–2 mm, glabrous;

pollen ellipsoid or spheroid.

ascending at anthesis;

sepals pubescent;

petals purple, 4–5 × 1–1.5 mm, glabrous;

pollen spheroid.

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

ascending to divaricate-ascending, straight, 2–6 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.

ascending to divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 2.5–4.8 cm × 2.5–3.2 mm;

valves glabrous;

ovules 26–34 per ovary;

style 0.1–0.3 mm.

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

wing continuous, to 0.2 mm wide.

uniseriate, 2.5–3.5 × 1.5–2.5 mm;

wing continuous, 0.2–0.9 mm wide.

= 14, 21.