Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 0.7–2.2 dm, glabrous throughout.

usually 1 per caudex branch, arising from center of rosette, elevated on woody base above or near ground surface, 0.6–2.8(–3.5) dm, densely pubescent proximally, trichomes short-stalked, 2–5-rayed, 0.1–0.3 mm, glabrous or sparsely pubescent distally.

blade oblanceolate, 1–2 mm wide, margins entire, ciliate near petiole base, trichomes (simple), to 0.4 mm, surfaces sparsely to densely pubescent, trichomes short-stalked, 4–8-rayed, 0.03–0.1 mm.

blade narrowly oblanceolate, 3–7(–10) mm wide, margins entire, ciliate near petiole base, trichomes (simple or spurred), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 2–4 (or 5)-rayed 0.1–0.3 mm.

6–11, sometimes concealing stem proximally;

blade auricles to 0.5 mm, surfaces of distalmost leaves glabrous.

3–7(–12), not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous or sparsely pubescent.

5–17-flowered, unbranched.

2–7-flowered, unbranched.

erect at anthesis;

sepals glabrous;

petals white, 3–4 × 0.5–0.8 mm, glabrous;

pollen ellipsoid.

ascending at anthesis;

sepals pubescent;

petals creamy white to purplish, 4–6 × 1–2 mm, sparsely pubescent (often some trichomes abaxially);

pollen ellipsoid.

erect, straight, 2–4(–7) mm, glabrous.

ascending, straight, 3–13 mm, glabrous or sparsely pubescent, trichomes appressed, branched.

erect, usually appressed to rachis, not secund, straight, edges parallel, 2–3.5 cm × 2.2–2.5 mm;

valves glabrous;

ovules 60–96 per ovary;

style 0.05–0.2 mm.

ascending, not appressed to rachis, not secund, straight to slightly curved, edges undulate (not parallel), (2.5–)4–8.5 cm × 3–5.5 mm;

valves glabrous;

ovules 16–44 per ovary;

style 0.05–1 mm.

sub-biseriate, 0.7–0.9 × 0.5–0.6 mm, not winged or minutely winged distally.

uniseriate, 3–6(–8) × 2–3.5 mm;

wing continuous, 0.8–2.5 mm wide.

= 14.