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.

usually 1–4 per caudex branch, usually arising from center of rosette near ground surface, rarely arising laterally proximal to sterile shoots, 1.5–8(–10.2) dm, glabrous or sparsely pubescent proximally, trichomes sessile, usually 2-rayed, rarely simple, 0.3–0.7 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, 1.5–8(–14) mm wide, margins usually entire, rarely dentate, ciliate, trichomes (sessile, usually 2-rayed, rarely simple ones at petiole base), surfaces usually pubescent, sometimes glabrous, trichomes sessile, 2-rayed (malpighiaceous), 0.3–0.7 mm.

2–6, rarely concealing stem;

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

6–52, concealing stem proximally;

blade auricles 0.5–3 mm, surfaces of distalmost leaves glabrous.

3–8-flowered, unbranched.

8–35(–80)-flowered, usually unbranched.

erect at anthesis;

sepals glabrous or sparsely pubescent;

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

pollen ellipsoid.

erect at anthesis;

sepals glabrous;

petals white (usually aging pale lavender), (5–)7–11 × 1.5–2.7 mm, glabrous;

pollen ellipsoid.

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

erect, straight, 5–18(–25) 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.

erect, appressed to rachis, not secund, straight, edges parallel, 4–9(–10.2) cm × 1.5–3.5 mm;

valves glabrous;

ovules 110–216 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.

biseriate, 1.3–2.2 × 1–1.6 mm;

wing lateral and distal, 0.3–0.8 mm wide.

= 14.