Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.7–2.2 dm, glabrous throughout.

usually 1 per caudex branch, arising from center of rosette near ground surface, 2–6 dm, pubescent proximally, trichomes sessile, 2- or 3-rayed, 0.15–0.6 mm, glabrous distally.

blade oblanceolate, 1–2 mm wide, margins entire, ciliate near petiole base, trichomes (simple), to 0.4 mm, surfaces sparsely to densely pubescent, trichomes short-stalked, 4–8-rayed, 0.03–0.1 mm.

blade oblanceolate, 1.5–5(–7) mm wide, margins usually entire, rarely denticulate, ciliate at petiole base, trichomes to 0.4 mm, surfaces pubescent, trichomes sessile, 2–4(–6)-rayed, 0.1–0.45 mm.

6–11, sometimes concealing stem proximally;

blade auricles to 0.5 mm, surfaces of distalmost leaves glabrous.

(7–)13–42, concealing stem proximally;

blade auricles 1–4 mm, surfaces of distalmost leaves sparsely pubescent apically.

5–17-flowered, unbranched.

(7–)14–45-flowered, usually unbranched.

erect at anthesis;

sepals glabrous;

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

pollen ellipsoid.

ascending at anthesis;

sepals glabrous;

petals lavender, 6–10 × 1.5–2 mm, glabrous;

pollen spheroid.

erect, straight, 2–4(–7) mm, glabrous.

erect, straight, 5–12 mm, glabrous.

erect, usually appressed to rachis, not secund, straight, edges parallel, 2–3.5 cm × 2.2–2.5 mm;

valves glabrous;

ovules 60–96 per ovary;

style 0.05–0.2 mm.

erect, appressed to rachis, not secund, straight, edges parallel, 4–6.5 cm × 1.5–2 mm;

valves glabrous;

ovules 60–140 per ovary;

style 0.1–0.3 mm.

sub-biseriate, 0.7–0.9 × 0.5–0.6 mm, not winged or minutely winged distally.

sub-biseriate, 1.4–2 × 1–1.4 mm;

wing continuous, 0.1–0.35 mm wide.