Flora of North America species comparison

unbranched or branched, 0.6–3(–3.7) dm, pubescent throughout, trichomes simple, 0.4–0.9 mm, and 2–4-rayed, 0.05–0.4 mm.

unbranched, 0.4–0.6 dm, densely pubescent throughout, trichomes dendritic, 3–6-rayed, (often crisped), 0.1–0.4 mm.

rosulate;

subsessile;

petiole base ciliate, (trichomes simple, 0.3–0.9 mm);

blade oblanceolate, 1–3.5 cm × 4–7(–12) mm, margins entire or denticulate, surfaces pubescent, abaxially with stalked, (2–)4-rayed trichomes, 0.1–0.5 mm, adaxially with simple trichomes, 0.2–0.6 mm, with smaller, 2–4-rayed ones.

(imbricate);

not rosulate;

sessile;

blade obovate to oblanceolate, 0.4–1.1 cm × 2–3.2 mm, margins entire, (base and margins not ciliate), surfaces pubescent with stalked, 4–8-rayed trichomes, 0.1–0.5 mm, (sometimes 1 or more rays spurred), adaxially sometimes trichomes simple.

(1 or) 2–6(–8);

sessile;

blade lanceolate or oblanceolate to ovate, margins entire or denticulate, surfaces pubescent as basal.

2 or 3 (sometimes basal leaves spaced, flowering stem appearing to 8-leaved);

sessile;

blade oblong to ovate, margins entire, surfaces pubescent as basal.

(5–)10–35(–47)-flowered, ebracteate, elongated in fruit;

rachis not flexuous, pubescent as stem.

4–15-flowered, ebracteate or proximalmost 1 or 2 flowers bracteate, slightly elongated in fruit;

rachis not flexuous, pubescent as stem.

sepals ovate, 2–2.7 mm, pubescent, (trichomes simple and short-stalked, 2-rayed);

petals pale yellow (fading white), oblanceolate, 2.5–3.7 × 0.9–1.2 mm;

anthers ovate, 0.2–0.3 mm.

sepals broadly ovate, 1.7–2.4 mm, pubescent, (trichomes short-stalked, 2–5-rayed);

petals yellow, obovate to oblanceolate, 3–4.5 × 1.5–2.5 mm;

anthers ovate, 0.4–0.5 mm.

divaricate-ascending, straight or only slightly curved upward, (1.5–)3–8(–10) mm, pubescent throughout, trichomes simple and stalked, 2–4-rayed.

divaricate-ascending, usually straight, rarely curved upward, 3–6(–10) mm, pubescent, trichomes 3–6-rayed, (crisped, 0.1–0.4 mm), and, sometimes, simple.

narrowly elliptic to lanceolate, plane, flattened, (7–)10–16(–19) × 2–3.5 mm;

valves pubescent, trichomes simple, spurred, and short-stalked, 2-rayed, 0.05–0.2(–0.3) mm;

ovules 20–36(–42) per ovary;

style 0.2–0.6(–0.8) mm.

(not appressed to rachis), ovate to elliptic, plane, flattened, 4–6.5 × 2.5–4 mm;

valves densely pubescent, trichomes simple and short-stalked, 2–5-rayed, 0.08–0.35 mm;

ovules 6–12 per ovary;

style (0.1–)0.3–0.7 mm.

oblong, 0.9–1.3 × 0.6–0.7 mm.

oblong, 1.4–1.8 × 0.8–1.2 mm.

= 44.