Flora of North America species comparison

1–3 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1–2.5 dm, glabrous throughout.

1 to several per caudex branch, arising from center and margin of rosette, slightly elevated on woody base or from near ground surface, 0.8–3 dm, densely pubescent throughout, trichomes short-stalked, 5–10-rayed, 0.1–0.2 mm.

blade narrowly oblanceolate, 1–3(–6) mm wide, margins usually entire, rarely apically few-toothed, not ciliate, surfaces sparsely pubescent, trichomes short-stalked, 4–8-rayed, 0.08–0.2 mm.

blade linear-oblanceolate, 1–5 mm wide, margins entire or with few teeth subapically, not ciliate, surfaces densely pubescent, trichomes short-stalked, 5–10-rayed, 0.1–0.2 mm.

4–8, not concealing stem;

blade auricles 1–2 mm, surfaces of distalmost leaves glabrous.

5–18, concealing stem proximally;

blade auricles 0.5–2.5 mm, surfaces of distalmost leaves densely pubescent.

5–12(–18)-flowered, usually unbranched.

8–35-flowered, usually unbranched.

ascending at anthesis;

sepals glabrous;

petals lavender to purple, 4–5.5 × 1–1.5 mm, glabrous;

pollen spheroid.

erect to ascending at anthesis;

sepals pubescent;

petals purplish, 8–12 × 2.5–4.5 mm;

pollen ellipsoid.

usually divaricate-ascending, rarely horizontal, straight, 2–5(–10) mm, glabrous.

erect to ascending, straight, 5–15 mm, pubescent, trichomes appressed, branched.

usually divaricate-ascending, rarely horizontal, not appressed to rachis, secund (often weakly so), straight, edges parallel, 3–5.5 cm × 1.5–2 mm;

valves glabrous;

ovules 42–54 per ovary;

style 0.05–0.1 mm.

erect to ascending, often appressed to rachis, not secund, straight, edges parallel, 3–5.8 cm × 1.4–1.8 mm;

valves densely pubescent throughout;

ovules 34–68 per ovary;

style 1–1.5 mm.

uniseriate, 1.1–1.5 × 0.9–1.3 mm;

wing continuous, 0.1–0.3 mm wide.

uniseriate, 1–1.5 × 0.8–1.2 mm;

wing continuous, 0.5–0.1 mm wide.