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 per caudex branch, arising from center of rosette, elevated on woody base above or near ground surface, 0.6–2.8(–3.5) dm, densely pubescent proximally, trichomes short-stalked, 2–5-rayed, 0.1–0.3 mm, glabrous or sparsely pubescent 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 narrowly oblanceolate, 3–7(–10) mm wide, margins entire, ciliate near petiole base, trichomes (simple or spurred), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 2–4 (or 5)-rayed 0.1–0.3 mm.

2–6, rarely concealing stem;

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

3–7(–12), not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous or sparsely pubescent.

3–8-flowered, unbranched.

2–7-flowered, 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 pubescent;

petals creamy white to purplish, 4–6 × 1–2 mm, sparsely pubescent (often some trichomes abaxially);

pollen ellipsoid.

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

ascending, straight, 3–13 mm, glabrous or sparsely pubescent, trichomes appressed, branched.

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, not appressed to rachis, not secund, straight to slightly curved, edges undulate (not parallel), (2.5–)4–8.5 cm × 3–5.5 mm;

valves glabrous;

ovules 16–44 per ovary;

style 0.05–1 mm.

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

wing continuous, 0.3–1 mm wide.

uniseriate, 3–6(–8) × 2–3.5 mm;

wing continuous, 0.8–2.5 mm wide.

= 14.