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, slightly elevated on woody base or from near ground surface, 2–6 dm, pubescent proximally, trichomes usually subsessile, 2- or 3-rayed, rarely simple, 0.25–0.4 mm, glabrous 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 oblanceolate, 2–6 mm wide, margins entire, ciliate proximally, trichomes to 0.7 mm, surfaces sparsely pubescent, trichomes subsessile to short-stalked, 2–5-rayed, 0.1–0.4 mm.

7–17, often concealing stem proximally;

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

5–10, rarely concealing stem proximally;

blade auricles 0.5–2 mm, surfaces of distalmost leaves glabrous.

19–39-flowered, usually unbranched.

5–16-flowered, usually 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 glabrous;

petals purple, 6–8 × 1.5–2 mm, glabrous;

pollen spheroid.

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

divaricate-ascending, straight, 4–10 mm, glabrous.

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 somewhat undulate (not parallel), 4–6.5(–7.6) cm × 2.5–3.5 mm;

valves glabrous;

ovules 24–54 per ovary;

style 0.2–0.8 mm.

sub-biseriate, 2–2.5 × 1.1–1.5 mm;

wing continuous, 0.15–0.25 mm wide.

uniseriate, 2.5–3.2 × 1.8–2.5 mm;

wing distal, 0.3–1 mm wide.