Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, (1–)2–9 dm, densely pubescent proximally, trichomes short- to long-stalked, 2–6-rayed, 0.2–0.5 mm, rarely mixed with simple ones, to 1.5 mm, glabrous or sparsely pubescent distally.

usually 1 per plant, arising from center of rosette near ground surface, 4–10 dm, glabrous throughout.

blade broadly oblanceolate to obovate, 7–25(–50) mm wide, margins usually repand to coarsely dentate, rarely entire, not ciliate, surfaces moderately to densely pubescent, trichomes short- to long-stalked, 3–6-rayed, 0.2–0.5 mm.

blade obovate to oblanceolate, 5–20 mm wide, margins dentate, not ciliate, surfaces glabrous or subapically puberulent, trichomes simple, 0.1–0.2 mm.

(3–)8–30, not concealing stem;

blade auricles absent, surfaces of distalmost leaves sparsely pubescent.

30–80, not concealing stem;

blade auricles absent, surfaces of distalmost leaves glabrous.

7–25-flowered, sometimes branched.

70–150-flowered, multi-branched.

erect to ascending at anthesis;

sepals glabrous or sparsely pubescent;

petals white, 3.5–6 × 0.8–1 mm, glabrous;

pollen ellipsoid.

divaricate-ascending at anthesis;

sepals glabrous;

petals white, 2.8–4 × 0.6–1 mm, glabrous;

pollen ellipsoid.

erect to divaricate-ascending, straight, 3–10 mm, glabrous or pubescent, trichomes spreading, usually 2–5-rayed, rarely simple.

divaricate-ascending to horizontal, straight or gently recurved, 6–15 mm, glabrous.

divaricate-ascending, not appressed to rachis, not secund, usually curved, rarely straight, edges parallel, (3.5–)5–13.5 cm × 2.5–4 mm;

valves glabrous or pubescent throughout;

ovules 34–50 per ovary;

style 0.5–1.5 mm.

divaricate-ascending to widely pendent, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 4.3–7.9 cm × 1.5–1.8 mm;

valves glabrous;

ovules 30–42 per ovary;

style 0.1–0.2 mm.

uniseriate, 2.5–5(–6) × 2–3(–3.5) mm;

wing continuous, 0.7–1.8 mm wide.

uniseriate, 1.2–1.7 × 0.7–1 mm;

wing continuous or, sometimes, distal (rarely absent), 0.1–0.2 mm wide.

Jul–Sep.

barrens and wooded slopes of crumbling shale; of conservation concern; 100–500 m;

Va., W.Va.

= 14.

= 14.