Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.3–1.5 dm, densely pubescent proximally, trichomes simple and short-stalked, 2–4-rayed, (0.07–)0.1–0.2 mm, glabrous or sparsely pubescent distally.

1 or several per caudex branch, arising from center or margin of rosette near ground surface, 0.8–2.8(–3.5) dm, sparsely pubescent proximally, trichomes simple and subsessile, 2-rayed, 0.3–0.6 mm, glabrous distally.

blade linear-oblanceolate, 1–3(–5) mm wide, margins entire, ciliate proximally, trichomes to 0.4 mm, surfaces densely pubescent, trichomes short-stalked, 2–6-rayed, (0.07–)0.1–0.2 mm.

blade oblanceolate to linear-oblanceolate, 1–4(–6) mm wide, margins entire or subapically toothed, ciliate proximally, trichomes (simple), to 0.6 mm, surfaces densely pubescent, trichomes short-stalked, 4–8-rayed, 0.05–0.1 mm.

2–6, rarely concealing stem;

blade auricles 0 (or 0.2–1.5) mm, surfaces of distalmost leaves glabrous.

2–6, not concealing stem;

blade auricles 0.5–1.5 mm, surfaces of distalmost leaves glabrous.

3–8-flowered, unbranched.

5–17-flowered, usually unbranched.

erect at anthesis;

sepals glabrous or sparsely pubescent;

petals lavender to purplish, 4–6(–7) × 1–2 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals glabrous or pubescent;

petals lavender to purple, 3.5–5.5 × 1–1.8 mm, glabrous;

pollen ellipsoid or spheroid.

erect, straight, 3–9 mm, glabrous or sparsely pubescent.

ascending to divaricate-ascending, straight, 4–14 mm, glabrous.

erect, appressed to rachis, not secund, straight, edges parallel, 2.5–5.5 cm × 1.3–1.7(–2) mm;

valves glabrous;

ovules 24–40 per ovary;

style 0.2–1 mm.

ascending to divaricate-ascending, not appressed to rachis, not secund, straight to slightly curved, edges parallel, 3–7 cm × 1–1.5 mm;

valves glabrous;

ovules 52–72 per ovary;

style 0.05–0.3 mm.

usually uniseriate, rarely sub-biseriate, 1.5–2(–2.5) × 1–1.4 mm;

wing continuous, 0.3–1 mm wide.

uniseriate, 1–1.5 × 0.7–1 mm;

wing often distal, ca. 0.1 mm wide.

= 14, 15.