Flora of North America species comparison

unbranched, (0.05–)0.2–0.8(–1.5) dm, pubescent throughout, trichomes simple and 2-rayed, 0.4–1 mm, with 3–5-rayed ones, 0.05–0.4 mm, (sometimes trichomes mostly simple).

unbranched, (0.2–)0.3–0.8 dm, sparsely pubescent proximally, glabrous distally, trichomes usually 2- or 3-rayed, rarely some simple, 0.1–0.25 mm.

rosulate; petiolate;

petiole base and margin ciliate, (trichomes often course, simple, 0.4–1.3 mm);

blade oblanceolate to obovate, 0.6–1.8 cm × 1.5–5 mm, margins entire, surfaces pubescent, abaxially with stalked, 2–6-rayed trichomes, 0.2–0.6 mm, adaxially with primarily simple and stalked, 2-rayed trichomes, to 1.1 mm, with 3–5-rayed ones, 0.2–0.4 mm.

not rosulate;

subsessile;

petiole margins not ciliate;

blade oblanceolate to oblong or elliptic, 0.3–0.8(–0.9) cm × (1–)1.5–3(–4) mm, margins entire, (not ciliate), surfaces usually pubescent, rarely both surfaces glabrous (except margin), with stalked, 2–4-rayed trichomes, 0.07–0.4 mm (or, rarely, trichomes mostly simple and 2-rayed adaxially).

0.

0.

2–9(–12)-flowered, ebracteate, (corymbose), slightly elongated in fruit;

rachis not flexuous, pubescent as stem.

(3–)5–11(–14)-flowered, ebracteate, slightly elongated in fruit;

rachis not flexuous, glabrous or sparsely pubescent as stem.

sepals (grayish green), broadly ovate, 2.2–3 mm, pubescent, (trichomes simple, to 1 mm, sometimes with stalked, smaller, 2–4-rayed ones);

petals (broadly patent), yellow, obovate, 4–6 × 3–5 mm;

anthers ovate, 0.3–0.4 mm.

sepals broadly ovate, 1.7–2.5 mm, glabrous or sparsely pubescent, (trichomes simple and short-stalked, 2- or 3-rayed);

petals yellow, spatulate, 2.7–4 × 1.5–2.2 mm;

anthers ovate, 0.4–0.5 mm.

divaricate-ascending, straight or slightly curved upward, 4–11(–16) mm, pubescent, trichomes simple and 2–4-rayed.

divaricate-ascending, straight or curved upward, (sometimes slightly expanded basally), 3–8 mm, usually glabrous, rarely sparsely pubescent, trichomes simple and 2- or 3-rayed.

oblong or ovate, plane, flattened, 6–12 × 3.5–5.5 mm;

valves pubescent or puberulent, trichomes simple, 0.1–0.4 mm, (sometimes with short-stalked, 2- or 3-rayed ones);

ovules 12–24 per ovary;

style 0.6–1 mm (stigma distinctly wider than style).

broadly lanceolate to ellipsoid or ovoid, plane, inflated at least basally, (2.5–)3.5–7(–8) × (1.5–)2–3.5 mm;

valves glabrous or sparsely pubescent, trichomes simple and short-stalked, 2(–4)-rayed, 0.07–0.2 mm;

ovules 4–10(–12) per ovary;

style 0.3–1(–1.3) mm.

(brown), ovoid, 1–1.3 × 0.6–0.9 mm.

oblong, 1–1.5 × 0.8–1 mm.

= 128, 144.

= 20.