Flora of North America species comparison

usually 2–5 per caudex branch, arising from margin of rosette near ground surface, or arising laterally proximal to sterile shoots, 0.2–0.8 dm, pubescent proximally, trichomes simple and short-stalked, 2- or 3-rayed, to 0.4 mm, glabrescent distally.

1–7 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1.5–5.5(–8) dm, densely pubescent proximally, trichomes simple and long-stalked, 2-rayed, 0.2–0.9 mm, glabrous distally.

blade linear, 0.8–1.5 mm wide, margins entire, ciliate, trichomes (simple and spurred), to 0.8 mm, surfaces moderately pubescent, trichomes short-stalked, 2–4-rayed, 0.05–0.4 mm.

blade broadly oblanceolate, 5–15(–20) mm wide, margins dentate, ciliate, trichomes (simple), to 1.2 mm, surfaces glabrous or pubescent, trichomes simple and long-stalked, usually 2-rayed, rarely some 3-rayed, 0.2–0.6 mm.

2–4, not concealing stem;

blade auricles absent, surfaces of distalmost leaves pubescent.

8–25, often concealing stem proximally;

blade auricles 0.8–3 mm, surfaces of distalmost leaves often glabrous.

2–5-flowered, unbranched.

6–40(–74)-flowered, usually unbranched.

erect at anthesis;

sepals pubescent;

petals white, 3.5–5 × 0.7–1 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals sparsely hirsute;

petals usually lavender, rarely white, 5–9 × 1–2 mm;

pollen ellipsoid.

erect to ascending, straight, 2–7 mm, usually pubescent, rarely glabrous, trichomes subappressed, branched.

horizontal to divaricate-ascending, curved or angled downward, 9–18(–23) mm, usually glabrous, rarely sparsely pubescent, trichomes spreading, simple.

erect to ascending, often appressed to rachis, not secund, straight, edges parallel, (1.3–)2–3.3 cm × 4–5 mm;

valves glabrous;

ovules 8–12 per ovary;

style 0.05–0.4 mm.

widely pendent, not appressed to rachis, not secund, curved to nearly straight, edges parallel, 3–5.8 cm × 1.5–2 mm;

valves glabrous;

ovules 98–128 per ovary;

style 0.2–0.5 mm.

uniseriate, 3–5 × 2.5–4.5 mm;

wing continuous, 0.8–2 mm wide distally.

biseriate, 0.9–1.2 × 0.6–0.8 mm;

wing distal (sometimes absent), 0.05–0.15 mm wide.

= 14.