Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 1.5–7(–10.5) dm, densely pubescent proximally, trichomes short-stalked, 2–8-rayed, 0.1–0.2 mm, sparsely pubescent distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.6–2.3 dm, glabrous throughout.

blade oblanceolate, 2–7 mm wide, margins entire or shallowly dentate, sometimes ciliate at petiole base, surfaces densely pubescent, trichomes short-stalked, 5–10-rayed, 0.05–0.2 mm.

blade oblanceolate, 3.5–14 mm wide, margins usually entire, rarely slightly dentate, not ciliate, surfaces glabrous.

15–40, concealing stem proximally;

blade auricles 0.5–2.5 mm or, rarely, absent, surfaces of distalmost leaves pubescent.

3–10, not concealing stem;

blade auricles absent, glabrous.

15–80(–140)-flowered, usually unbranched.

4–24-flowered, usually unbranched.

pendent at anthesis;

sepals pubescent;

petals white to lavender, 4–8 × 0.8–2.2 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals glabrous;

petals white to lavender, 6–10 × 2.5–4 mm, glabrous;

pollen ellipsoid.

reflexed, abruptly recurved at base, otherwise usually straight, 7–12(–18) mm, pubescent, trichomes appressed, branched.

ascending, straight, 3–18 mm, glabrous.

strongly reflexed, usually appressed to rachis, sometimes somewhat secund, straight, edges parallel, 3.5–9 cm × 0.9–1.8 mm;

valves glabrous or sparsely pubescent throughout;

ovules 60–116 per ovary;

style 0.5–2 mm.

ascending to divaricate-ascending, not appressed to rachis, not secund, straight to slightly curved, edges parallel, 2.5–7 cm × 1.5–2.5 mm;

valves glabrous;

ovules 28–50 per ovary;

style 0.1–0.8 mm.

uniseriate, 1–1.4 × 0.9–1.2 mm;

wing continuous, to 0.1 mm wide.

uniseriate, 1.8–2.2 × 0.8–1.7 mm;

wing distal or continuous, 0.1–0.5 mm wide.

= 14.