Flora of North America species comparison

usually branched, 1.1–3.4 dm, hirsute proximally, trichomes mostly simple and 2-rayed, 0.2–1.5 mm, pubescent distally, trichomes mostly 2- or 3-rayed, 0.2–1 mm.

branched or unbranched, (0.4–)1–3.5(–4.7) dm, often pubescent throughout (sometimes sparsely so distally), sometimes glabrous, trichomes simple and 2-rayed, (non-crisped), 0.2–1 mm, or subsessile, stellate-pectinate, and 3–8-rayed, 0.1–0.3 mm.

rosulate;

petiole (obscure), ciliate, (trichomes simple and 2-rayed);

blade obovate to oblanceolate, 1.6–2.5 cm × 5–10 mm, margins usually entire, rarely denticulate, surfaces pubescent, abaxially with stalked, mostly cruciform trichomes, 0.5–1 mm, adaxially with simple and stalked, 2–4-rayed ones.

rosulate;

petiolate;

petiole ciliate, (trichomes simple, 0.1–0.8 mm);

blade oblanceolate to spatulate or linear-oblanceolate, (0.6–)1–3.5(–5) cm × 2–8(–10) mm, margins dentate or denticulate, (pubescent as petiole), surfaces pubescent with non-crisped, minutely stalked, 4–8(–12)-rayed, stellate-pectinate trichomes, 0.15–0.6 mm, (midvein obscure abaxially), adaxially sometimes also with simple trichomes, or glabrous.

usually 1–5;

sessile or subsessile;

blade oblanceolate to oblong, margins often denticulate, (ciliate proximally, with 2- or 3-rayed trichomes).

2–17(–25);

sessile;

blade ovate to oblong, margins dentate to subentire, surfaces often pubescent as basal, or predominantly with simple trichomes adaxially.

9–25-flowered, ebracteate, elongated in fruit;

rachis not flexuous, pubescent, trichomes 2- or 3-rayed.

(5–)8–26(–34)-flowered, ebracteate or proximalmost 1 or 2 flowers bracteate, elongated in fruit;

rachis not flexuous, usually glabrous, rarely pubescent as stem.

sepals oblong-obovate, 2–3.5 mm, pubescent, (trichomes short- to long-stalked, 2–4-rayed, 0.2–0.8 mm);

petals yellow (often fading whitish), oblanceolate, 3–5 × 1–1.5 mm;

anthers ovate, 0.4–0.5 mm.

sepals oblong, 2–3.5 mm, pubescent, (trichomes simple and short-stalked, 2–4-rayed);

petals white, broadly obovate, 4–5.5 × 1.5–3 mm;

anthers ovate, 0.3–0.5 mm.

horizontal to divaricate-ascending, usually straight, rarely curved upward, 7–10 mm, pubescent, trichomes 2- or 3-rayed.

divaricate-ascending to suberect, straight, (1–)3–10(–16) mm, glabrous or pubescent as stem.

narrowly elliptic to slightly falcate, plane, flattened, (7–)10–16 × (2–)2.5–3.7 mm;

valves pubescent, trichomes short-stalked, 2–4-rayed, 0.2–0.5 mm;

ovules 14–22 per ovary;

style 0.9–1.2 mm.

oblong to ovate or ovoid to lanceolate or linear-lanceolate, usually plane, rarely slightly twisted, flattened or inflated, (3–)5–12(–16) × 2–3.5 mm;

valves glabrous or pubescent, trichomes simple or 2–4-rayed, 0.05–0.2(–0.4) mm;

ovules (20–)24–36 per ovary;

style 0.05–0.2(–0.5) mm.

oblong, 1.1–1.5 × 0.7–0.9 mm.

oblong, 0.9–1.1 × 0.5–0.7 mm.

= 20.

= 64, 80.