Flora of North America species comparison

usually 2–5 per plant, arising from margin of rosette near ground surface, (1–)2–8 dm, densely pubescent proximally, trichomes short-stalked, 3- or 4-rayed, 0.1–0.5 mm, similarly pubescent distally.

usually 1 per caudex branch, arising from center of rosette, elevated above ground surface on woody base, 1–4(–5) dm, usually glabrous proximally, rarely pubescent, trichomes short-stalked, 2-rayed, 0.1–0.3 mm, glabrous distally.

blade obovate to oblanceolate, (5–)10–45 mm wide, margins usually coarsely dentate, rarely sinuate, ciliate on petiole base, surfaces moderately pubescent, trichomes short-stalked, 3- or 4(–6)-rayed, 0.1–0.5 mm.

blade narrowly oblanceolate, 1.5–6 mm wide, margins entire, not ciliate or, rarely, with simple trichomes to 0.7 mm, surfaces glabrous or sparsely to densely pubescent, trichomes short-stalked, 2–6-rayed, 0.07–0.4 mm.

6–25, concealing stem proximally;

blade auricles 1–6 mm, surfaces of distalmost leaves pubescent.

(4–)6–12, sometimes concealing stem proximally;

blade auricles 0.5–2 mm, surfaces of distalmost leaves glabrous.

10–40-flowered, usually unbranched.

6–12-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals purplish, 3–4 × 0.7–1 mm, glabrous;

pollen ellipsoid.

pendent at anthesis;

sepals glabrous;

petals purple or whitish with rose tips, 4.5–6 × 2–2.5 mm, glabrous;

pollen ellipsoid or spheroid.

usually horizontal, usually straight, rarely slightly curved, 5–15 mm, pubescent, trichomes spreading, simple.

reflexed, usually abruptly recurved at base, otherwise straight, 4–18 mm, glabrous.

usually horizontal, not appressed to rachis, not secund, straight, edges parallel, (1.5–)2–3.3 cm × 0.8–1 mm;

valves sparsely pubescent throughout;

ovules 12–20 per ovary;

style 0.4–0.8 mm.

reflexed to closely pendent, sometimes appressed to rachis, often secund, straight to somewhat curved, edges undulate (not parallel), 3–7(–8) cm × 3–5(–6) mm;

valves glabrous;

ovules 20–30 per ovary;

style 0.4–1.2 mm.

uniseriate, 0.8–1.1 × 0.6–0.8 mm, not winged.

uniseriate, 2.5–5.5 × 1.8–3.5 mm;

wing continuous, 0.8–1.5 mm wide.

= 14.