Flora of North America species comparison

usually 1 per caudex branch, arising from center of rosette near ground surface, 3–8 dm, densely pubescent proximally, trichomes simple mixed with fewer short-stalked, 2-rayed ones, 0.4–1.5 mm, glabrous or sparsely pubescent distally.

1 to several per caudex branch, arising from center and margin of rosette, slightly elevated on woody base or from near ground surface, 0.8–3 dm, densely pubescent throughout, trichomes short-stalked, 5–10-rayed, 0.1–0.2 mm.

blade oblanceolate or linear-oblanceolate, 3–12 mm wide, margins usually entire, rarely dentate, ciliate proximally, trichomes (usually simple), to 1 mm, surfaces densely pubescent, trichomes short-stalked, 2–5-rayed, 0.3–0.8 mm.

blade linear-oblanceolate, 1–5 mm wide, margins entire or with few teeth subapically, not ciliate, surfaces densely pubescent, trichomes short-stalked, 5–10-rayed, 0.1–0.2 mm.

(9–)15–35, often concealing stem proximally;

blade auricles 3–10 mm, surfaces of distalmost leaves glabrous, sometimes margins ciliate.

5–18, concealing stem proximally;

blade auricles 0.5–2.5 mm, surfaces of distalmost leaves densely pubescent.

12–50-flowered, usually unbranched.

8–35-flowered, usually unbranched.

ascending at anthesis;

sepals sparsely pubescent;

petals usually lavender to purple, rarely white, 7–13 × 2–5 mm, glabrous;

pollen ellipsoid.

erect to ascending at anthesis;

sepals pubescent;

petals purplish, 8–12 × 2.5–4.5 mm;

pollen ellipsoid.

usually ascending, rarely almost horizontal, straight or slightly recurved, 3–10(–18) mm, usually pubescent, rarely glabrous, trichomes spreading, usually simple.

erect to ascending, straight, 5–15 mm, pubescent, trichomes appressed, branched.

usually ascending, rarely almost horizontal, not appressed to rachis, not secund, usually curved, edges parallel, 5–13 cm × 1.7–2 mm;

valves glabrous;

ovules 90–170 per ovary;

style 0.05–0.3 mm.

erect to ascending, often appressed to rachis, not secund, straight, edges parallel, 3–5.8 cm × 1.4–1.8 mm;

valves densely pubescent throughout;

ovules 34–68 per ovary;

style 1–1.5 mm.

uniseriate, 1.5–2 × 1–1.5 mm;

wing continuous, 0.1–0.2 mm wide.

uniseriate, 1–1.5 × 0.8–1.2 mm;

wing continuous, 0.5–0.1 mm wide.

= 14.