Flora of North America species comparison

usually 2–5 per caudex branch, arising from margin of rosette near ground surface, (1–)1.5–4 dm, densely pubescent proximally, trichomes short-stalked, 5–8-rayed, 0.1–0.2 mm, moderately to sparsely pubescent distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 1–4 dm, glabrous or sparsely pubescent proximally, trichomes sessile or subsessile, 2- or 3-rayed, 0.1–0.3 mm, glabrous distally.

blade narrowly oblanceolate, 1.5–3(–5) mm wide, margins entire, ciliate along petiole base, trichomes (simple), to 0.6 mm, surfaces densely pubescent, trichomes short-stalked, 5–8-rayed 0.1–0.2 mm.

blade oblanceolate, 2–6 mm wide, margins entire, ciliate along petiole, trichomes (submalpighiaceous or simple), to 0.6 mm, surfaces sparsely to densely pubescent, trichomes subsessile, 2–6-rayed, 0.1–0.3 mm.

5–14, not concealing stem;

blade auricles 0.1–0.5 mm, surfaces of distalmost leaves pubescent.

3–15, often concealing stem proximally;

blade auricles 0.7–2.5 mm, surfaces of distalmost leaves usually glabrous.

10–30-flowered, usually unbranched.

5–25-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals usually white, 5–7 × 1–2 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals glabrous or pubescent with scattered trichomes;

petals purple to lavender, 6–8 × 1.5–2.5 mm, glabrous;

pollen spheroid.

ascending to divaricate-ascending, straight, 5–10 mm, pubescent, trichomes branched.

horizontal to ascending, straight or curved, 4–8 mm, glabrous.

ascending to divaricate-ascending, not appressed to rachis, not secund, straight, edges parallel, 3–5.5 cm × 0.9–1.2 mm;

valves glabrous;

ovules 56–84 per ovary;

style 0.1–0.5 mm.

horizontal to ascending, secund, straight to slightly curved, edges parallel, 3–5.8 cm × 2–3.5 mm;

valves glabrous;

ovules 44–76(–104) per ovary;

style 0.05–0.5 mm.

uniseriate, 0.8–1 × 0.6–0.9 mm;

wing continuous (rarely absent), to 0.1 mm wide.

uniseriate, 1.5–2.2 × 1.2–1.6 mm;

wing continuous, 0.3–0.7 mm wide.

= 14.