Flora of North America species comparison

1 per caudex branch, arising from center of rosette near ground surface, 0.5–1 dm, puberulent proximally, trichomes (scattered), simple, 0.02–0.1 mm, similarly pubescent distally.

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.

blade oblong-oblanceolate, 1–2 mm wide, margins entire, ciliate distally, trichomes (simple), 0.02–0.1 mm, surfaces glabrous.

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.

3–7, not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous.

7–17, often concealing stem proximally;

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

4–7-flowered, unbranched.

19–39-flowered, usually unbranched.

ascending at anthesis;

sepals glabrous;

petals lavender, 4–5 × 1–1.2 mm, glabrous;

pollen ellipsoid.

divaricate to pendent at anthesis;

sepals pubescent;

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

pollen spheroid.

ascending, straight, 5–9 mm, glabrous.

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

ascending, not appressed to rachis, not secund, straight, edges parallel, 2.5–3 cm × 1–1.5 mm;

valves glabrous;

ovules 30–34 per ovary;

style ca. 0.5 mm.

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.

uniseriate, ca. 1.2 × 0.8 mm;

wing distal or continuous, ca. 0.1 mm wide.

sub-biseriate, 2–2.5 × 1.1–1.5 mm;

wing continuous, 0.15–0.25 mm wide.