Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.6–2(–3) dm, glabrous throughout.

usually 1 per caudex branch, arising from center of rosette near ground surface, 1–2.5 dm, densely pubescent proximally, trichomes short-stalked, 2–5-rayed, 0.2–0.6 mm, and sparse, simple ones to 1 mm, glabrous distally.

blade narrowly oblanceolate, 1–7 mm wide, margins entire, ciliate proximally, trichomes (simple mixed with a few short-stalked, 2-rayed ones) 0.1–0.4 mm, surfaces glabrous.

blade narrowly oblanceolate, 1.5–3 mm wide, margins entire, ciliate along petiole, trichomes (simple), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 4–8-rayed, 0.1–0.2 mm.

2–4, not concealing stem;

blade auricles (0–)0.2–1 mm, surfaces of distalmost leaves usually glabrous, rarely ciliate proximally.

3–5, not concealing stem;

blade auricles 0.5–1 mm, surfaces of distalmost leaves pubescent.

2–5-flowered, unbranched.

10–22-flowered, unbranched.

erect to ascending at anthesis;

sepals glabrous;

petals white to dark lavender, 4–8 × 1–2.5 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals pubescent;

petals white, 3–4 × 0.5–0.8 mm, glabrous;

pollen ellipsoid.

ascending, straight, 4–10 mm, glabrous.

divaricate-ascending, straight, 4–8 mm, sparsely pubescent, trichomes appressed, branched.

suberect to ascending, usually not appressed to rachis, not secund, straight to curved, edges often somewhat undulate (not parallel), 2.5–6.5 cm × 3–7 mm;

valves glabrous;

ovules 10–20 per ovary;

style 0.05–0.3 mm.

divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 3–4 cm × 1.2–1.5 mm;

valves glabrous;

ovules 46–52 per ovary;

style ca. 0.1 mm.

uniseriate, 3–6 × 2–4 mm;

wing continuous, 1.3–2.5 mm wide.

uniseriate, 1–1.1 × 0.9–1 mm;

wing continuous, ca. 0.1 mm wide.