Flora of North America species comparison

usually 2–5 per caudex branch, arising laterally proximal to sterile shoots or rosette, often elevated above ground surface on woody base, (1.5–)2–7 dm, densely pubescent proximally, trichomes short-stalked, Y-shaped, 0.2–0.4 mm, often mixed with 3–5-rayed or (rarely) simple ones, usually glabrous distally.

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.

blade oblanceolate to obovate, 3–15(–20) mm wide, margins dentate, ciliate proximally, trichomes to 1.2 mm, surfaces moderately to densely pubescent, trichomes short-stalked, 3–6-rayed, 0.2–0.4 mm.

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

4–12(–17), not concealing stem;

blade auricles 0.5–3.5 mm, surfaces of distalmost leaves glabrous.

3–7, not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous.

16–35-flowered, usually unbranched.

4–7-flowered, unbranched.

ascending at anthesis;

sepals pubescent;

petals white to purplish, 5–9 × 1–1.5 mm, glabrous or sparsely pubescent (occasionally some trichomes abaxially);

pollen ellipsoid.

ascending at anthesis;

sepals glabrous;

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

pollen ellipsoid.

usually horizontal, straight or slightly recurved, (6–)10–25 mm, usually glabrous.

ascending, straight, 5–9 mm, glabrous.

widely pendent, not appressed to rachis, not secund, usually curved, edges parallel, (3–)4–7 cm × 1.7–2.1 mm;

valves glabrous;

ovules 60–96 per ovary;

style 0.05–0.4 mm.

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.

uniseriate, 1.1–1.5 × 0.9–1.2 mm;

wing continuous, 0.1–0.2 mm wide.

uniseriate, ca. 1.2 × 0.8 mm;

wing distal or continuous, ca. 0.1 mm wide.

= 14.