Flora of North America species comparison

branched distally, (0.3–)0.5–3(–4.2) dm, pubescent proximally, often glabrous distally, trichomes simple, 0.1–1 mm, sometimes with fewer, stalked, 2-rayed ones.

unbranched, (0.05–)0.1–0.8 dm, pubescent throughout, sometimes sparsely so distally, trichomes simple, 0.3–0.7 mm, and 2–4-rayed, 0.05–0.2 mm.

rosulate; shortly petiolate;

petiole (0–0.5 cm), ciliate throughout;

blade obovate to oblanceolate or linear-lanceolate, (0.3–)1–2.8(–3.5) cm × (1–)2–6(–9) mm, margins entire or denticulate, (ciliate, trichomes simple, 0.4–1 mm), surfaces usually pubescent, abaxially with stalked, 2–4-rayed trichomes, 0.05–0.4(–0.5) mm, (rarely with simple trichomes along midvein), adaxially with simple trichomes sometimes also with 2-rayed ones, 0.07–0.4 mm, rarely glabrous.

(not imbricate); rosulate; petiolate;

petiole ciliate, (trichomes simple and 2-rayed, 0.4–1.3 mm);

blade oblanceolate, 0.5–1.1 cm × 1.5–4 mm, margins entire, (pubescent as petiole, apex acute to subacute, trichomes simple and/or branched), surfaces pubescent, abaxially with simple trichomes, to 1 mm, and stalked, 2–4-rayed ones, 0.1–0.5 mm, adaxially with simple trichomes, 0.4–1 mm, (sometimes glabrous).

(0 or) 1–3(–5);

sessile;

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

0.

(2–)6–30(–50)-flowered, ebracteate, elongated in fruit;

rachis straight or, rarely, flexuous, glabrous.

2–8-flowered (congested), ebracteate, slightly elongated in fruit;

rachis not flexuous, pubescent as stem.

(chasmogamous, petaliferous);

sepals ovate, 1.4–2.1 mm, glabrous or sparsely pubescent, (trichomes simple);

petals yellow, spatulate to oblanceolate, 2–3.2 × 0.7–1.2 mm;

anthers ovate, 0.15–0.25 mm.

sepals ovate, 1.8–2.3 mm, pubescent, (trichomes simple with fewer, short-stalked ones);

petals pale yellow, narrowly spatulate to oblanceolate, 2.5–3 × 0.8–1.5 mm;

anthers ovate, 0.2–0.3 mm.

divaricate-ascending or horizontal, (not appressed to rachis), usually straight, rarely curved upward, (3–)5–14(–16) mm (subequaling or shorter than fruit), usually glabrous, rarely sparsely puberulent.

divaricate to ascending, straight or slightly curved upward, 1.5–4 mm, pubescent as stem or trichomes branched.

lanceolate to narrowly elliptic or linear, plane, flattened, (4–)6–12(–15) × (1–)1.4–2.1 mm;

valves glabrous;

ovules (20–)24–38(–44) per ovary;

style 0.01–0.12 mm.

often obovate, plane, slightly flattened, 5–10 × (3–)3.5–5 mm;

valves glabrate or sparsely pubescent, 0.05–0.2 mm;

ovules 8–16(–20) per ovary;

style 0.05–0.15 mm.

oblong, 0.7–1 × 0.4–0.5 mm.

ovoid, 1.1–1.6 × 0.7–1 mm.

= 24.

= 32.