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, 0.3–1.5(–2) dm, glabrous throughout.

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 linear-oblanceolate, 1–5(–8) mm wide, margins entire, usually ciliate at least proximally, trichomes (simple and/or short-stalked, 2- or 3-rayed), 0.1–0.3 mm, surfaces (sometimes the entire leaf) usually glabrous or (rarely, the youngest leaves of sterile shoots) pubescent, trichomes 4–6-rayed, 0.05–0.1 mm.

2–5, concealing stem proximally;

blade auricles absent, surfaces of distalmost leaves pubescent.

1–5, usually not concealing stem;

blade auricles 0.5–1.5 mm or, rarely, absent, surfaces glabrous.

3- or 4-flowered, unbranched.

2–10(–15)-flowered, unbranched.

not seen.

erect at anthesis;

sepals glabrous;

petals lavender to purplish, 6–8.5 × 1.5–3 mm, glabrous;

pollen ellipsoid or spheroid.

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

erect, straight, 3–8(–15) 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, 3–5.6 cm × 1.5–2.5 mm;

valves glabrous;

ovules 34–64 per ovary;

style 0.1–0.7 mm.

uniseriate, 5.5–6.5 × 4–4.5 mm;

wing continuous, 1–2 mm wide.

biseriate or sub-biseriate, 1.5–2 × 1–1.5 mm;

wing continuous, 0.3–0.5 mm wide.