Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 1–3 dm, densely pubescent proximally, trichomes short-stalked, 4–7-rayed, 0.1–0.5 mm, mixed proximally with simple and short- to long-stalked, 2- or 3-rayed ones, to 1.5 mm, moderately pubescent distally.

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

blade linear-oblanceolate, 1.5–3 mm wide, margins entire, ciliate proximally, trichomes (simple and 2- or 3-rayed), to 1.5 mm, surfaces moderately pubescent, trichomes short-stalked, 4–7-rayed, 0.3–0.6 mm.

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.

9–17, concealing stem proximally;

blade auricles absent, surfaces of distalmost leaves moderately pubescent.

6–11, sometimes concealing stem proximally;

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

8–35-flowered, usually unbranched.

5–17-flowered, unbranched.

pendent at anthesis;

sepals pubescent;

petals yellowish proximally and brick-red distally or, rarely, one color throughout, 9–10 × 0.8–1 mm, glabrous;

pollen ellipsoid.

erect at anthesis;

sepals glabrous;

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

pollen ellipsoid.

reflexed, straight, 1.5–2 mm, pubescent, trichomes appressed, branched.

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

(immature) reflexed, often appressed to rachis, not secund, straight, edges parallel, ca. 4 cm;

valves pubescent throughout;

style ca. 0.3 mm.

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.

not seen.

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