Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 1–4(–5) dm, densely pubescent proximally, trichomes short-stalked, 2–6-rayed, 0.1–0.2 mm, sparsely 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 narrowly oblanceolate, 1–4(–5) mm wide, margins prominently dentate to subpinnatifid (leaf margins of sterile shoots often entire), ciliate near petiole base, trichomes (simple or 2-rayed), 0.4–0.6 mm, surfaces densely pubescent, trichomes short-stalked, (2–)4–9-rayed, 0.05–0.2 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.

(10–)20–60, often concealing stem throughout;

blade auricles 0.5–3 mm, surfaces of distalmost leaves moderately to sparsely pubescent.

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

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

8–30-flowered, usually unbranched.

6–12-flowered, usually unbranched.

divaricate-ascending to pendent at anthesis;

sepals pubescent;

petals usually purple, rarely lavender, 9–14 × 1.5–3 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.

reflexed, strongly recurved, 5–15 mm, pubescent, trichomes appressed, branched.

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

pendent, not appressed to rachis, not secund, straight to slightly curved, edges parallel, (3.5–)5–8 cm × (1.6–)2–3 mm;

valves pubescent throughout;

ovules 24–42 per ovary;

style 0.5–1 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, 2.5–3.5 × 1.5–2.2 mm;

wing continuous or at both ends, 0.4–0.8 mm wide.

uniseriate, 2.5–5.5 × 1.8–3.5 mm;

wing continuous, 0.8–1.5 mm wide.

= 14.