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.

1–4 per caudex branch, arising from margin of rosette near ground surface, 1–3 dm, glabrous throughout.

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 linear-oblanceolate to oblanceolate, 1–3(–5) mm wide, margins entire or minutely toothed, rarely ciliate near petiole base, trichomes (simple), to 0.8 mm, surfaces pubescent or glabrous, trichomes short-stalked, 3–6-rayed, 0.07–0.2 mm.

6–11, sometimes concealing stem proximally;

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

4–15, not concealing stem;

blade auricles 0.5–2.5 mm, surfaces of distalmost leaves glabrous.

5–17-flowered, unbranched.

12–40-flowered, usually unbranched.

erect at anthesis;

sepals glabrous;

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

pollen ellipsoid.

divaricate to pendent at anthesis;

sepals pubescent;

petals lavender, 5–6 × ca. 1 mm, glabrous;

pollen ellipsoid or spheroid.

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

reflexed, abruptly recurved near base, 4–8 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.

reflexed to closely pendent, usually appressed to rachis, often secund, straight, edges parallel, 0.3–0.42 cm × 1–1.5 mm;

valves glabrous;

ovules 46–60 per ovary.

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

uniseriate, 1–1.3 × 0.8–1 mm;

wing continuous, 0.05–0.1 mm wide.