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 leaf tuft, elevated above ground surface on woody base, 2–4.2 dm, densely pubescent proximally, trichomes short-stalked, 3–6-rayed, 0.1–0.5 mm, similarly pubescent 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 linear or linear-oblanceolate, 1–2 mm wide, margins entire, rarely ciliate near petiole base, trichomes (simple), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 3–8-rayed, 0.1–0.4 mm.

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

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

10–25, concealing stem proximally;

blade auricles absent or, rarely, to 1 mm, surfaces of distalmost leaves densely pubescent.

8–30-flowered, usually unbranched.

7–15-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.

divaricate-ascending at anthesis;

sepals pubescent;

petals lavender to purple, 10–12 × 2–3 mm, glabrous or sparsely pubescent (occasionally some trichomes abaxially);

pollen ellipsoid.

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

divaricate-ascending, straight to slightly curved proximally, recurved distally, 10–20(–25) mm, pubescent, trichomes appressed, branched.

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.

usually widely pendent to ascending, rarely horizontal, not appressed to rachis, not secund, straight, edges parallel, (3.2–)4–5.5 cm × 2–2.5 mm;

valves pubescent throughout;

ovules 86–120 per ovary;

style 0.1–0.3 mm.

uniseriate, 2.5–3.5 × 1.5–2.2 mm;

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

biseriate, 1–1.5 × 0.7–0.9 mm;

wing continuous, 0.07–0.12 mm wide.

= 14.

= 14.