Flora of North America species comparison

1 per caudex branch, arising from center of rosette near ground surface, ca. 1 dm, densely pubescent proximally, trichomes stalked, (2 or) 3–6-rayed, 0.2–0.5 mm, glabrate distally.

usually 1 per caudex branch, arising from center of rosette near ground surface, 2–6 dm, pubescent proximally, trichomes sessile, 2- or 3-rayed, 0.15–0.6 mm, glabrous distally.

blade oblanceolate, 4–6 mm wide, margins entire, not ciliate, surfaces moderately pubescent, trichomes long-stalked, 3–6 (or 7)-rayed, 0.2–0.5 mm.

blade oblanceolate, 1.5–5(–7) mm wide, margins usually entire, rarely denticulate, ciliate at petiole base, trichomes to 0.4 mm, surfaces pubescent, trichomes sessile, 2–4(–6)-rayed, 0.1–0.45 mm.

2–5, concealing stem proximally;

blade auricles absent, surfaces of distalmost leaves pubescent.

(7–)13–42, concealing stem proximally;

blade auricles 1–4 mm, surfaces of distalmost leaves sparsely pubescent apically.

3- or 4-flowered, unbranched.

(7–)14–45-flowered, usually unbranched.

not seen.

ascending at anthesis;

sepals glabrous;

petals lavender, 6–10 × 1.5–2 mm, glabrous;

pollen spheroid.

erect-ascending, straight, 4–5 mm, glabrous or sparsely pubescent, trichomes appressed, branched.

erect, straight, 5–12 mm, glabrous.

erect-ascending, sometimes appressed to rachis, not secund, straight, edges parallel, 3–4 cm × ca. 5 mm;

valves glabrous;

ovules ca. 16 per ovary;

style 0.5–0.7 mm.

erect, appressed to rachis, not secund, straight, edges parallel, 4–6.5 cm × 1.5–2 mm;

valves glabrous;

ovules 60–140 per ovary;

style 0.1–0.3 mm.

uniseriate, 5.5–6.5 × 4–4.5 mm;

wing continuous, 1–2 mm wide.

sub-biseriate, 1.4–2 × 1–1.4 mm;

wing continuous, 0.1–0.35 mm wide.