Flora of North America species comparison

usually 3–7 per caudex branch, arising from margin of rosette near ground surface, 0.5–2.5 dm, usually sparsely pubescent proximally, rarely glabrous, trichomes short-stalked, 2- or 3-rayed, 0.06–0.2 mm, glabrous distally.

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

blade narrowly oblanceolate, 2–4 mm wide, margins entire or somewhat dentate, ciliate near petiole base, trichomes (simple), to 0.5 mm, surfaces sparsely pubescent, trichomes short-stalked, 2–5-rayed, 0.1–0.25 mm.

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.

3–7, not concealing stem;

blade auricles 0.5–1.5 mm, surfaces of distalmost leaves glabrous.

6–11, sometimes concealing stem proximally;

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

5–12-flowered, usually unbranched.

5–17-flowered, unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 5–7.5 × 0.8–1.5 mm, glabrous;

pollen spheroid.

erect at anthesis;

sepals glabrous;

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

pollen ellipsoid.

divaricate-ascending, straight, 8–12 mm, glabrous.

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

usually divaricate-ascending, rarely nearly horizontal, not appressed to rachis, not secund, curved to straight, edges parallel, 3–4.7 cm × 1–1.5 mm;

valves glabrous;

ovules 64–86 per ovary;

style 0.2–0.5 mm.

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.

uniseriate, 1.1–1.3 × 0.8–1.1 mm;

wing continuous, 0.08–0.1 mm wide.

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