Flora of North America species comparison

1–3 per caudex branch, arising laterally proximal to sterile shoots near ground surface, ca. 2.5 dm, densely pubescent proximally, trichomes simple and 2-rayed, 0.25–0.7 mm, glabrescent distally.

usually 1 per caudex branch, arising from center of leaf tuft, above ground surface on woody base, 2–5.5 dm, densely pubescent proximally, trichomes short-stalked, 4–7-rayed, 0.1–0.4 mm, similarly pubescent distally.

blade oblanceolate to obovate, 2.5–5 mm wide, margins entire, ciliate along petiole, trichomes (simple), to 1 mm, surfaces densely pubescent, trichomes simple and short-stalked, 2- or 3-rayed, 0.25–0.5 mm.

blade linear to linear-oblanceolate, 2–3(–4) mm wide, margins entire, sometimes ciliate near petiole base, trichomes (simple or 2-rayed), to 0.8 mm, surfaces densely pubescent, trichomes short-stalked, 4–8-rayed, 0.1–0.3 mm.

4–6, not concealing stem;

blade auricles ca. 1 mm, surfaces of distalmost leaves sparsely pubescent.

7–18, concealing stem proximally;

blade auricles absent, surfaces of distalmost leaves densely pubescent.

6–10-flowered, unbranched.

6–26-flowered, usually unbranched.

ascending at anthesis;

sepals pubescent;

petals lavender, 4–5 × 1–1.5 mm, glabrous;

pollen ellipsoid.

divaricate at anthesis;

sepals pubescent;

petals white to pale lavender, 8–18 × 2.5–4.4(–5.5) mm, glabrous;

pollen ellipsoid.

ascending, straight, 6–10 mm, glabrous or sparsely pubescent, trichomes subappressed, branched.

horizontal to descending, usually recurved, 5–10(–20) mm, pubescent, trichomes appressed, branched.

divaricate-ascending, not appressed to rachis, not secund, slightly curved, edges parallel, 4–5 cm × ca. 1 mm;

valves glabrous;

ovules ca. 64 per ovary;

style ca. 0.2 mm.

divaricate-descending to reflexed, usually not appressed to rachis, rarely somewhat secund, straight, edges parallel, 4.3–7 cm × 1.6–3 mm;

valves pubescent throughout;

ovules 72–98 per ovary;

style ca. 0.1 mm.

uniseriate, (none mature).

biseriate, 1.2–1.6 × 1–1.2 mm;

wing continuous, 0.1–0.2 mm wide.

= 14.