Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 2–7 dm, sparsely to densely pubescent proximally, trichomes subsessile, sub-malpighiaceous, 0.3–0.6 mm, glabrous distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.5–2 dm, densely pubescent proximally, trichomes short-stalked, 4–10-rayed, 0.07–0.15 mm, sparsely to densely pubescent distally.

blade oblanceolate, 3–7 mm wide, margins entire, ciliate proximally, trichomes (simple), to 0.8 mm, surfaces sparsely to densely pubescent, trichomes subsessile, 2–5-rayed, 0.2–0.55 mm.

blade narrowly oblanceolate, 1.5–4 mm wide, margins entire, not ciliate, surfaces densely pubescent, trichomes short-stalked, 6–14-rayed, 0.07–0.15 mm.

7–17, often concealing stem proximally;

blade auricles 2–5 mm, surfaces of distalmost leaves sparsely pubescent or glabrous.

4–10, often concealing stem proximally;

blade auricles absent, surfaces of distalmost leaves densely pubescent.

19–39-flowered, usually unbranched.

10–18-flowered, unbranched.

divaricate to pendent at anthesis;

sepals pubescent;

petals white to pale lavender, 6–7 × 1.2–2 mm, glabrous;

pollen spheroid.

ascending at anthesis;

sepals pubescent;

petals purple, 9–14 × 2–4 mm, glabrous;

pollen ellipsoid.

reflexed, recurved proximally, 5–13 mm, glabrous.

divaricate-ascending, straight, 5–14 mm, pubescent, trichomes appressed, branched.

reflexed, rarely appressed to rachis, not secund, straight, edges parallel, 4–7(–8.5) cm × 2–2.3 mm;

valves glabrous;

ovules 88–104 per ovary;

style 0.3–0.7 mm.

divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 4–6 cm × 2.5–4 mm;

valves glabrous;

ovules 26–34 per ovary;

style (0.7–)1–2 mm.

sub-biseriate, 2–2.5 × 1.1–1.5 mm;

wing continuous, 0.15–0.25 mm wide.

uniseriate, 1.9–2.7 × 1.5–2.2 mm;

wing continuous, 0.3–0.7 mm wide.